๐Ÿ“Š DASHBOARD

Updated just now
๐ŸŒค๏ธ
72ยฐF
Houston, TX
24hr Precip
0.0"
Humidity
65%
Wind
8 mph
โœ… I&I Risk: LOW
No significant rainfall expected
Plant Status
โœ…
NORMAL
Flow: 3.2 MGD
Compliance
95%
0 violations
DMR Due
๐Ÿ“‹
14
days remaining
๐Ÿงช EFFLUENT SNAPSHOT
BOD
12.5
42%
TSS
15.2
51%
NHโ‚ƒ
1.8
36%
pH
7.2
OK
E.coli
180
45%
Clโ‚‚
0.8
40%
โš™๏ธ PROCESS HEALTH
โœ…
MLSS
2,850 mg/L
โœ…
DO
2.1 mg/L
โœ…
SVI
125 mL/g
โœ…
Blanket
1.5 ft
โœ…
pH
7.2
โœ…
Temp
72 ยฐF
โœ…
RAS
50,000 GPD
๐Ÿ“… UPCOMING TASKS & SCHEDULE
๐Ÿ“‹
DMR Submission
Due: Jan 15
๐Ÿ”ง
Blower PM
Due: Jan 8
๐Ÿงช
Lab Sampling
Tomorrow
๐Ÿ“
Weekly Report
Friday
๐ŸŽฏ QUICK ACTIONS

๐Ÿ”„ REACTORS

๐Ÿ“ Jump to Section (SBR โ€ข MBR โ€ข MBBR)
โš™๏ธ
Master
โฑ๏ธ
SBR Cycle
๐Ÿ’จ
SBR Air
โฌ‡๏ธ
Settling
๐Ÿ”ฌ
MBR Flux
โšก
MBR Energy
๐Ÿงซ
MBBR
๐Ÿ”—
IFAS

๐Ÿ”„ Advanced Reactor Systems

SBR, MBR, and MBBR calculators and troubleshooting guides

โš™๏ธ Reactor Master Settings

Set master parameters for each reactor type. Values auto-sync to all related calculators.

๐Ÿ”„ SBR Master Parameters

๐Ÿ”ฌ MBR Master Parameters

๐Ÿงซ MBBR Master Parameters

๐Ÿ”„ Sequencing Batch Reactor (SBR) Analysis

โฑ๏ธ SBR Cycle Time Optimization
Optimize fill, react, settle, decant, and idle phases
๐Ÿ’จ SBR Aeration & Oxygen Demand
Calculate oxygen requirements for BOD and nitrogen removal
โฌ‡๏ธ SBR Settling Performance
Analyze settling characteristics and decant performance
๐Ÿ“Š SBR Loading Parameters
Calculate F/M ratio, volumetric loading, and MLSS inventory
๐Ÿšฟ SBR Waste Sludge (WAS)
Calculate waste activated sludge requirements
๐ŸŒฟ SBR Nutrient Removal (BNR)
Evaluate nitrogen and phosphorus removal performance
๐Ÿ”ง SBR Troubleshooting Guide
Diagnose common SBR operational issues and get recommended solutions

๐Ÿ”ฌ Membrane Bioreactor (MBR) Analysis

๐Ÿ’ง Membrane Flux & Permeability
Calculate membrane performance and capacity
๐Ÿ’จ MBR Aeration (Process + Scour)
Calculate process aeration and membrane scour air requirements
โšก MBR Energy Analysis
Calculate energy consumption and costs
๐Ÿงน MBR Cleaning & Recovery
Track membrane fouling and cleaning effectiveness
๐Ÿ“Š MBR Loading & SRT
Calculate loading rates and solids retention time
๐Ÿ”ง MBR Troubleshooting Guide
Diagnose common MBR operational issues

๐Ÿงซ Moving Bed Biofilm Reactor (MBBR) Analysis

๐ŸŽฏ MBBR Media & Surface Area
Calculate effective biofilm surface area and media requirements
๐Ÿ”ฌ MBBR BOD Removal Design
Calculate surface area loading rate for BOD removal
๐Ÿ’จ MBBR Aeration Requirements
Calculate process and mixing air requirements
๐ŸŒฟ MBBR Nitrification Design
Calculate surface area for ammonia removal
๐ŸŒŠ MBBR Hydraulic Design
Verify hydraulic parameters and retention screens
๐Ÿ“ˆ MBBR Performance Monitoring
Track and evaluate MBBR performance
๐Ÿ”— IFAS (Integrated Fixed-Film Activated Sludge)
Calculate combined suspended and attached growth
๐Ÿ”ง MBBR Troubleshooting Guide
Diagnose common MBBR/IFAS operational issues and get recommended solutions

๐Ÿ“‹ COMPLIANCE & LAB

๐Ÿ“ Jump to Section
๐ŸŽฏ
All Recs
๐Ÿ“ˆ
Benchmark
๐Ÿ”ฌ
Lab Entry
๐Ÿ›๏ธ
Permit
๐Ÿ“Š
Limits
๐Ÿ“
DMR
โš ๏ธ
Risk
๐Ÿ“ˆ Industry Benchmarking GENIUS v9.9.19
COMPOSITE BENCHMARK SCORE
78
/ 100
๐Ÿ† Top 15%
vs. similar facilities
CATEGORY PERFORMANCE
๐Ÿงช BOD Removal Efficiency 92%
๐Ÿ”ฌ TSS Removal Efficiency 88%
โšก Energy Efficiency 68%
๐Ÿงซ SRT Management 82%
๐ŸŒ€ Settling Performance 85%
๐Ÿ“Š PERFORMANCE RADAR
๐Ÿญ INDUSTRY COMPARISON
๐Ÿ†
Your Plant
Score: 78 | Rank: Top 15%
๐Ÿ“Š
Industry Average
Score: 65 | Median performer
โญ
Top Performer
Score: 95 | Best in class
๐Ÿ“ˆ
Improvement Potential
+17 points to reach top tier
๐Ÿ’ก IMPROVEMENT OPPORTUNITIES
โšก Energy Efficiency +12 pts possible

Optimize DO setpoints and implement load shifting to reach 80th percentile.

๐Ÿงซ SRT Optimization +5 pts possible

Fine-tune WAS rates to maintain SRT in 8-12 day optimal range for your loading.

๐Ÿ”ฌ TSS Performance On track

Current performance is strong. Maintain clarifier operations and monitor SVI.

๐ŸŽฏ Comprehensive Recommendations ALL GENIUS SYSTEMS
CRITICAL
2
Immediate action
HIGH PRIORITY
5
This week
MEDIUM
8
This month
TOTAL SAVINGS
$85K
Annual potential
SOURCES
8
GENIUS systems
๐Ÿ“… 30-DAY ACTION PLAN
๐Ÿšจ WEEK 1: CRITICAL
โ€ข Address compliance alerts
โ€ข Check equipment warnings
โ€ข Review safety issues
โšก WEEK 2: HIGH PRIORITY
โ€ข Optimize DO setpoints
โ€ข Schedule PM for Blower #2
โ€ข Review chemical dosing
๐Ÿ“Š WEEK 3: OPTIMIZATION
โ€ข Implement load shifting
โ€ข Fine-tune WAS rates
โ€ข Update SOP documentation
โœ… WEEK 4: VERIFICATION
โ€ข Validate improvements
โ€ข Update benchmarks
โ€ข Prepare monthly report

๐Ÿ“‹ TCEQ Compliance & Laboratory Module

Permit Tracking, DMR Preparation, Sample Entry & QA/QC

๐Ÿ”ฌ Laboratory Sample Entry
๐Ÿ›๏ธ Permit Information
๐Ÿ“Š Effluent Limits & Monitoring
Enter your TPDES permit limits. System will track compliance and alert on exceedances.
Parameter Daily Max Weekly Avg Monthly Avg Units Current Value Status
BODโ‚… mg/L โœ“ OK
TSS mg/L โœ“ OK
NHโ‚ƒ-N mg/L โœ“ OK
E. coli - MPN/100mL โœ“ OK
DO mg/L minimum mg/L โœ“ OK
pH - S.U. โœ“ OK
Total P mg/L โœ“ OK
๐Ÿ“ DMR (Discharge Monitoring Report) Generator

Daily Monitoring Data Entry

DateFlow (MGD)BOD (mg/L)TSS (mg/L)NH3 (mg/L)pHDO (mg/L)
๐Ÿ“… Compliance Calendar & Deadlines

DMR Due

Jan 25, 2025

Monthly Report

Permit Expires

Dec 31, 2027

Renewal Required

Days Compliant

365

This Year

Violations YTD

0

Year to Date

Upcoming Deadlines

๐Ÿ“‹ December DMR Submission Due: Jan 25, 2025
๐Ÿ”ฌ Quarterly Biomonitoring (WET Test) Due: Jan 31, 2025
๐Ÿ“Š Annual Sludge Report Due: Feb 19, 2025
๐Ÿ›๏ธ Permit Renewal Application Due: Jun 30, 2027
โœ… Laboratory QA/QC Status

Duplicates

98.5%

RPD < 20%

Blanks

Pass

All < MDL

Standards

99.2%

Recovery

Hold Times

100%

Compliance

๐Ÿญ PLANT PROFILES

๐ŸŽ›๏ธ Master Settings
Plant settings have moved to the Settings panel
Configure flow rates, aeration, clarifiers, disinfection, and more in one place.
๐Ÿ“‚ Save & Load Plant Profiles
Save plant configurations for different clients. Load a profile to auto-populate all values instantly.
๐Ÿ’พ Save Current Values as New Profile
โš™๏ธ Extended Profile Parameters
Optional details for each plant profile. These are saved with the profile.
๐Ÿ“ค Import & Export Profiles
Backup your profiles or transfer them between devices.

๐Ÿ’ผ BUSINESS

๐Ÿ“ Jump to Section
๐Ÿ‘ฅ
Clients
๐Ÿ“
Proposals
๐Ÿ’ต
ROI Calc
๐ŸŽฏ
Scenarios
๐Ÿ’ฐ
Cost Calc
โฑ๏ธ
Time Track

๐Ÿ’ผ Business & Consulting Tools

Client management, proposals, and ROI analysis for your consulting practice

๐Ÿ’ฐ Operations Cost Calculator

Daily Cost

$0.00

Operating

Monthly Cost

$0.00

30-day avg

Annual Cost

$0.00

Projected

Cost per MG

$0.00

$/MG treated
๐Ÿญ Plant Information
๐Ÿงช Chemical Costs
ChemicalDose (mg/L)Unit Cost ($/lb)Daily Use (lb)Daily CostMonthly Cost
- - -
- - -
- - -
- - -
- - -
Chemical Subtotal $0.00 $0.00
โšก Energy Costs
EquipmentHP/kWQtyHours/DayDaily kWhDaily CostMonthly Cost
- - -
- - -
- - -
- - -
- - -
Energy Subtotal 0 $0.00 $0.00
๐Ÿš› Solids Disposal Costs
Wet Tons per Day-wet tons/day
Loads per Month-loads
Disposal Cost-$/month
Hauling Cost-$/month
Solids Subtotal$0.00/month
๐Ÿ“Š Total Cost Summary
Chemical Costs$0.00/month$0.00/year
Energy Costs$0.00/month$0.00/year
Solids Disposal$0.00/month$0.00/year
TOTAL$0.00/month$0.00/year
Cost per MG Treated$0.00/MG

๐Ÿ‘ฅ Client & Project Management

Total Clients

0

Active Projects

0

Plants Managed

0

Revenue YTD

$0

โž• Add New Client
๐Ÿ“‹ Client Database
No clients added yet. Add your first client above!
๐Ÿ“ Projects
No projects yet. Create a project after adding clients.

๐Ÿ“ Proposal Generator

๐Ÿ“‹ Create New Proposal
๐Ÿ”ง Services & Scope
Select services to include in your proposal. Prices are customizable.
๐Ÿ’ฐ Proposal Summary
Selected Services Subtotal: $0.00
Total Proposal: $0.00
๐Ÿ“‚ Saved Proposals
No saved proposals yet.

๐Ÿ’ต ROI Calculator

๐Ÿ“Š Current vs Proposed Scenario

๐Ÿ“ Current State

Current Annual Cost: $0

๐ŸŽฏ After Improvements

Proposed Annual Cost: $0
๐Ÿ’ฐ Investment & Payback Analysis
๐Ÿ“ˆ ROI Results
Enter current and proposed values, then click "Calculate ROI" to see results.
๐Ÿ“Š Savings Breakdown
๐Ÿ“„ Client Report

โฑ๏ธ Time Tracking

โฑ๏ธ Active Timer
00:00:00
โž• Manual Time Entry
๐Ÿ“Š Time Log

Total Hours

0

Billable Hours

0

Unbilled Amount

$0

Avg Hours/Day

0

No time entries yet. Start the timer or add manual entries above.
๐Ÿ“ˆ Weekly Summary
Mon
0
Tue
0
Wed
0
Thu
0
Fri
0
Sat
0
Sun
0

๐Ÿค– AI Enhancement

๐Ÿง  Intelligent Process Analysis AI Powered

Let AI analyze your plant data and provide optimization recommendations

๐Ÿ”ฎ AI Insights & Recommendations
Click an analysis type above to generate AI-powered insights based on your current plant data.
๐Ÿ’ก Process Optimization 92% Confidence

Based on current F/M ratio and MLSS levels, consider increasing RAS rate by 8-12% to improve settling and reduce SVI.

โšก Energy Saving Opportunity 87% Confidence

DO levels are consistently above setpoint. Reducing blower output by 15% during 2AM-6AM could save approximately $2,400/month.

โš ๏ธ Predictive Alert 78% Confidence

SVI trend indicates potential filamentous bulking in 7-10 days. Consider implementing chlorination or nutrient adjustment.

๐Ÿ› ๏ธ Quick AI Tools
๐Ÿ“
AI Report Writer

Generate professional reports from your data

๐Ÿ”
Smart Troubleshooter

Diagnose issues with intelligent questioning

๐Ÿ“ˆ
Process Optimizer

Get real-time optimization suggestions

โœ…
Compliance Advisor

TCEQ regulation guidance and DMR review

๐Ÿ’ฌ AI Assistant Chat
Hello! I'm your WWTP AI assistant. I can help you with process optimization, troubleshooting, compliance questions, and more. What would you like to discuss?
Analyzing...

๐Ÿ“Š Google Sheets Sync

๐Ÿ”— Connect to Google Sheets

Export plant data to Google Sheets for tracking, reporting, and analysis.

Not Connected

๐Ÿ“ค Export Data to Sheet

๐Ÿ“Š Daily Operations
๐Ÿงช Lab Results
๐Ÿ’ฐ Costs

๐Ÿ”„ Auto-Sync Settings

๐Ÿ“‹ Service Proposal Generator

๐Ÿ“‹ Create Professional Proposal

Generate customized service proposals for wastewater consulting engagements.

๐Ÿ‘ค Client Information

๐Ÿญ Facility Information

๐Ÿ› ๏ธ Services Offered

๐Ÿ“‹ Routine Services
๐Ÿ“Š Reports & Compliance
๐Ÿ”ง Special Projects

๐Ÿ’ฐ Pricing

๐Ÿ“… DAILY OPERATIONS

๐Ÿ“ Jump to Section (15 Features)
๐Ÿ“‹
Checklist
๐Ÿ“
Shift Log
๐Ÿ““๐ŸŽค
VOICE JOURNAL
Tap to Log โ€ข Hands-Free
๐Ÿšจ
Alarms
โšก
Energy
๐Ÿ”ง
Work Orders
๐Ÿงช
Lab Samples
๐Ÿ“…
Calendar
๐ŸŽ“
Certs
๐Ÿงด
Chemicals
๐ŸŒค๏ธ
Weather
๐Ÿ“ˆ
Flow Total
๐Ÿ“Š
% Removal
๐Ÿ““
VOICE JOURNAL
๐ŸŽค Hands-Free Logging โ€ข Auto-Timestamped
NEW

Hands-free logging with voice input. All entries automatically timestamped for documentation.

TAP TO SPEAK
Chrome, Edge, or Safari required
0
Today
0
This Week
0
Total
0
Voice
๐Ÿ““
No journal entries yet
Start logging with text or voice input above
๐Ÿ“‹ Daily Rounds Checklist
Complete all items during your shift. Progress is saved automatically.

๐ŸŒ… Morning Checks (6:00 AM)

โ˜€๏ธ Midday Checks (12:00 PM)

๐ŸŒ™ Evening Checks (6:00 PM)

Progress: 0 / 15 (0%)
๐Ÿง™ Calculation Wizards
Guided step-by-step calculations for common tasks. Perfect for new operators!

โš–๏ธ F/M Ratio Wizard

Calculate Food to Microorganism ratio step by step

5 steps โ€ข ~2 min

โฑ๏ธ SRT Wizard

Calculate Solids Retention Time with guidance

6 steps โ€ข ~3 min

๐Ÿšฟ WAS Rate Wizard

Determine optimal waste activated sludge rate

4 steps โ€ข ~2 min

๐Ÿงช Chlorine Dose Wizard

Calculate chlorine dosing requirements

4 steps โ€ข ~2 min

๐Ÿงช SVI Wizard

Calculate Sludge Volume Index step by step

3 steps โ€ข ~1 min

๐Ÿ“‰ BOD Removal Wizard

Calculate BOD removal efficiency

4 steps โ€ข ~2 min

๐Ÿ”„ RAS Rate Wizard

Calculate Return Activated Sludge rate

4 steps โ€ข ~2 min

โฐ Detention Time Wizard

Calculate hydraulic detention time

3 steps โ€ข ~1 min

๐ŸŒŠ Clarifier SOR Wizard

Calculate Surface Overflow Rate

3 steps โ€ข ~1 min

๐Ÿงด Polymer Dose Wizard

Calculate polymer dosing for dewatering

5 steps โ€ข ~2 min

๐Ÿ’จ Blower Air Wizard

Calculate aeration requirements

5 steps โ€ข ~3 min

โฑ๏ธ CT Disinfection Wizard

Calculate CT for disinfection compliance

4 steps โ€ข ~2 min
๐ŸŽ“ Operator Training
Interactive training modules for new operators. Complete all modules to earn certification!

Module 1: Activated Sludge Basics

Understanding biological treatment fundamentals

Module 2: Key Process Parameters

MLSS, SVI, F/M, SRT, and what they mean

Module 3: Troubleshooting Common Problems

Identify and fix operational issues

Training Progress: 0 / 3 modules
๐Ÿ“š Formula Reference
Quick reference guide with all essential wastewater formulas. Click any formula for detailed explanation!
F/M Ratio
F/M = (BOD ร— Flow ร— 8.34) / (MLVSS ร— Volume ร— 8.34)
โ„น๏ธ
SRT (Sludge Retention Time)
SRT = System Solids (lb) / Solids Wasted (lb/day)
โ„น๏ธ
SVI (Sludge Volume Index)
SVI = (Settled Volume mL/L ร— 1000) / MLSS mg/L
โ„น๏ธ
BOD Loading
BOD Load (lb/day) = BOD (mg/L) ร— Flow (MGD) ร— 8.34
โ„น๏ธ
Percent Removal
% Removal = ((In - Out) / In) ร— 100
โ„น๏ธ
Detention Time
DT (hours) = (Volume gal ร— 24) / (Flow GPD)
โ„น๏ธ
Surface Overflow Rate
SOR = Flow (GPD) / Surface Area (sq ft)
โ„น๏ธ
CT (Disinfection)
CT = Chlorine Residual (mg/L) ร— Contact Time (min)
โ„น๏ธ
๐Ÿ“‹ Operator Shift Logbook NEW v9.9.17

Digital shift handoff documentation. Log events and issues for seamless transitions.

Current Shift
Day Shift
DAY

โž• Quick Log

07:15Routine
Shift started. All equipment operational.
๐Ÿšจ Alarm Management NEW v9.9.17

โš ๏ธ Critical

0

โšก Warnings

0

โœ“ Ack'd

0

!
High DO - Basin 1
DO 4.8 mg/L exceeds 3.0 setpoint
โšก Energy Dashboard NEW v9.9.17

Today

5,240

kWh

Intensity

1,048

kWh/MG

Monthly

$12.4K

Est.

Peak

485

kW
๐Ÿ“Š Energy by Process
๐Ÿ’จAeration55%
๐Ÿ”„Pumping25%
๐ŸขOther20%
๐Ÿ“ Work Orders NEW v9.9.17

๐Ÿ“‹ Open

3

๐Ÿ”„ Progress

2

โœ… Done

15

Open

WO-0156: Blower #2 Bearing

John D. | Due: Dec 26
In Progress

WO-0155: Clarifier Inspection

Mike S. | Due: Dec 28

โž• Quick Work Order

๐Ÿงช Lab Sample Tracker NEW v9.9.19

๐Ÿ“ฆ Pending

5

๐Ÿ”ฌ At Lab

3

โœ“ Complete

47

โš ๏ธ Overdue

0

SAM-2024-1247โ— At Lab
Dec 22, 08:15
Influent Composite - BOD, TSS, NHโ‚ƒ
๐Ÿ“ Point: INF-01๐ŸงŠ Temp: 4ยฐCโฑ๏ธ Hold: 24hr left
SAM-2024-1246โœ“ Results Ready
Dec 21, 14:30
Effluent Grab - pH, DO, Chlorine Res.
๐Ÿ“ Point: EFF-01๐Ÿ“Š All Pass

โž• Log New Sample

๐Ÿ“… Compliance Calendar NEW v9.9.19

December 2024

Sun
Mon
Tue
Wed
Thu
Fri
Sat

๐Ÿ“‹ Upcoming Deadlines

DMR Submission
Dec 28, 2024
5 days
Monthly BOD/TSS Sampling
Dec 30, 2024
7 days
Quarterly Biosolids Report
Jan 15, 2025
23 days
๐ŸŽ“ Operator Certifications NEW v9.9.19

โœ“ Valid

4

โš ๏ธ Expiring

1

๐Ÿ“š CEUs

24

A
John Smith
Class A WWTP Operator โ€ข License #WW-12345
Valid
Expires: Mar 15, 2025 CEUs: 18/20 required
B
Mike Johnson
Class B WWTP Operator โ€ข License #WW-23456
Expiring Soon
Expires: Jan 30, 2025 CEUs: 12/15 required
๐Ÿงช Chemical Inventory NEW v9.9.19
โš ๏ธ
Low Stock Alert
Sodium Hypochlorite below reorder point (15%)
๐Ÿงช
Polymer (Cationic) 78%
455 lbs remainingEst. 23 days
๐Ÿ’ง
Ferric Chloride 42%
320 gal remainingEst. 12 days
๐Ÿงด
Sodium Hypochlorite 15%
120 gal remainingEst. 4 days โš ๏ธ

๐Ÿ“ฆ Log Delivery / Usage

๐ŸŒค๏ธ Weather & Operations Impact NEW v9.9.19
โ˜€๏ธ
72ยฐF
Sunny, Clear Skies
๐Ÿ“ Houston, TX
๐Ÿ’ง 45%
๐Ÿ’จ 8 mph
๐ŸŒง๏ธ 0%
Mon
โ˜€๏ธ
74ยฐ
Tue
โ›…
71ยฐ
Wed
๐ŸŒง๏ธ
65ยฐ
Thu
๐ŸŒง๏ธ
62ยฐ
Fri
โ›…
68ยฐ
๐ŸŒง๏ธ
Rain Expected Wed-Thu
Expected: 1.5-2.0 inches. Prepare for I/I increase. Consider reducing WAS rates preemptively.
Est. Flow Impact
+15%
Temp Effect on Bio
Optimal
Storm Prep Status
Ready

โš™๏ธ PROCESS CONTROL

๐Ÿ“ Jump to Section
๐ŸŽฏ
Optimizer
๐Ÿงฎ
Adv Calcs
๐ŸŽ›๏ธ
Master Settings
๐Ÿ“ฅ
Loading
๐Ÿงซ
Sludge
๐Ÿ’จ
Oxygen
๐Ÿ“Š
Calcs
๐Ÿงช
Chemicals
๐ŸŒŠ
Hydraulics
๐Ÿ“ˆ
SPC Charts
๐Ÿ”ฌ
Lab Calcs
๐Ÿ“ˆ
Flow Total
๐Ÿ“Š
% Removal
๐ŸŽฏ Process Optimization Advisor GENIUS v9.9.19
OPTIMIZATION SCORE
70
/ 100
GOOD
ANNUAL SAVINGS
๐Ÿ’ฐ
$48K
potential/year
RECOMMENDATIONS
2
HIGH
3
MED
1
LOW
6 total actions
QUICK WINS
โšก
3
implement today
๐Ÿ“Š ANALYSIS AREAS
๐Ÿ’จ
Aeration
Analyzing...
$12K/yr
85%
๐Ÿงซ
Solids Mgmt
Analyzing...
$8K/yr
72%
๐ŸŒฟ
Nutrient Removal
Analyzing...
$6K/yr
88%
๐Ÿงช
Chemical Dosing
Analyzing...
$15K/yr
58%
โšก
Energy Efficiency
Analyzing...
$7K/yr
75%
๐ŸŽฏ PRIORITIZED RECOMMENDATIONS
๐Ÿ“‹ Implementation Progress
0 of 6 completed
Realized Savings: $0 Remaining: $48K
๐Ÿงฎ Advanced Calculator Suite 12 NEW TOOLS
๐Ÿ’จ
Blower
โš—๏ธ
Alkalinity
๐ŸŒ€
SVI
๐Ÿงช
Chlorine
๐Ÿ”„
Pump
๐Ÿ”€
Flow Split
๐Ÿงซ
Polymer
๐Ÿซง
Aeration
โ†ฉ๏ธ
Return Rate
โš–๏ธ
Loading
๐Ÿš›
Sludge
โšก
Energy
๐Ÿ’จ Blower Air Requirement SCFM
Air Required
2,083
SCFM
HP Estimate
75
Horsepower
โš—๏ธ Alkalinity for Nitrification lbs/day
Alk Consumed
1,840
lbs/day as CaCOโ‚ƒ
Soda Ash Needed
485
lbs/day
๐ŸŒ€ SVI & Settleability Analysis mL/g
SVI
83
mL/g
SDI
1.20
g/100mL
Status
GOOD
Settling
โœ“ Normal settling characteristics. Maintain current operations.
๐Ÿงช Chlorine Dosing Calculator lbs/day
Chlorine Required
117
lbs Clโ‚‚/day
Solution Feed Rate
112
GPD
๐Ÿ”„ Pump Flow & Head Calculator GPM/HP
Water HP
4.4
Brake HP
6.3
Motor HP
7.5
๐Ÿ”€ Flow Split Calculator % Split
Unit 1
2.0
MGD (40%)
Unit 2
1.75
MGD (35%)
Unit 3
1.25
MGD (25%)
๐Ÿงซ Polymer Dosing Calculator lbs/DT
Dry Polymer
27
lbs/day
Solution Feed
648
GPD
๐Ÿซง Aeration Basin Sizing MG
Total Volume
1.17
MG
Each Basin
0.58
MG
Surface Area
10,400
sq ft each
โ†ฉ๏ธ RAS/WAS Return Rate %
RAS Ratio
60%
RAS Flow
2.1
MGD
Recycle
1,458
GPM
โš–๏ธ Organic Loading Rates lbs/day
BOD Load
5,838
lbs/day
TSS Load
6,422
lbs/day
OLR
58
lbs BOD/1000 cf
๐Ÿš› Sludge Production Estimate lbs/day
Dry Solids
3,503
lbs/day
Wet Cake
19,461
lbs/day
Weekly Loads
3.4
@ 20 tons
โšก Energy Cost Calculator $/day
Daily kWh
1,656
Daily Cost
$149
Annual Cost
$54K
๐Ÿ”ฌ Advanced Calculator Suite II 10 NEW TOOLS
๐Ÿงฌ
Nutrient
๐Ÿ”ฅ
Digester Gas
๐Ÿ“Š
BOD/COD
๐ŸŒŠ
Hydraulics
๐ŸŒก๏ธ
Temp Corr
๐Ÿ”ต
Nitrogen
๐ŸŸฃ
Phosphorus
โฑ๏ธ
Detention
๐Ÿ’จ
Velocity
โšก
Methane
๐Ÿงฌ Nutrient Removal Efficiency BNR
TN Removal
80%
Excellent
TP Removal
89%
Excellent
โœ“ BNR system operating at optimal efficiency
๐Ÿ”ฅ Digester Gas Production cf/day
Total Gas
75,000
cf/day
BTU/day
30.4M
million
Power Gen
130
kW equiv
๐Ÿ“Š BOD/COD Ratio Analysis RATIO
BOD/COD
0.44
Biodegradable
BOD Removal
95%
COD Removal
91%
โœ“ Typical municipal wastewater - readily biodegradable
๐ŸŒŠ Pipe Hydraulics (Hazen-Williams) ft/s
Velocity
5.67
ft/sec
Head Loss
4.82
ft
HL/100ft
0.48
ft
โœ“ Velocity within acceptable range (2-10 ft/s)
๐ŸŒก๏ธ Temperature Correction Factors ฮธ
BOD Rate @ Temp
0.40
per day
Nitrif. Rate @ Temp
1.22
mg/L/hr
BOD ฮธ Factor
0.79
Nitrif. ฮธ Factor
0.61
๐Ÿ”ต Nitrogen Mass Balance lbs/day
TKN Load In
1,022
lbs/day
N Denitrified
744
lbs/day
Eff. TN
9.5
mg/L
๐ŸŸฃ Chemical Phosphorus Removal Alum/FeClโ‚ƒ
Alum Required
320
lbs/day as Al
Ferric Required
640
lbs/day as Fe
Alum Solution (48%)
65 GPD
Ferric Solution (40%)
128 GPD
โฑ๏ธ Detention Time Calculator hrs
HRT
3.43
hours
Total Volume
1.0
MG
Surface Area
5,568
sq ft each
๐Ÿ’จ Channel/Pipe Velocity ft/s
Velocity
0.67
ft/sec
Cross-Section
12
sq ft
Contact Time
75
seconds
โœ“ Velocity OK for channel flow (min 1.0 ft/s recommended)
โšก Methane Energy Potential kWh
Methane BTU
48.8M
BTU/day
Elec. Potential
5,000
kWh/day
Daily Value
$450
/day
Annual Value: $164,250
๐Ÿ”ฌ Lab & Process Calculations 8 Calcs + Help

Standard Methods lab calculations with built-in training guides. Click ? on any calculator for regulatory standards, best practices, and troubleshooting.

๐Ÿ“Š Total Suspended Solids (TSS)

SM 2540 D - Dried at 103-105ยฐC

TSS Result
-- mg/L
Formula: TSS = ((Final - Tare) ร— 1,000) / Volume (mL)
๐Ÿ’ก Typical Ranges: Influent: 150-350 mg/L | Effluent: 5-30 mg/L | MLSS: 2,000-4,000 mg/L
๐ŸŽ›๏ธ Master Settings
Design Flow
-- MGD
Aeration Vol
-- MG
Clarifier Area
-- sq ft
Target DO
-- mg/L
๐Ÿ“ฅ Influent Loading Parameters
๐Ÿ’ง
๐Ÿ“Š Loading Results & Analysis
Parameter Value Unit 7-Day Avg Trend Status
BOD Load - lb/d - - -
TSS Load - lb/d - - -
TKN Load - lb/d - - -
TP Load - lb/d - - -
COD Load - lb/d - - -
Organic Loading Rate
0.42
lb BOD/lb MLVSS/d
Volumetric Loading
58.3
lb BOD/1000 ftยณ/d
BOD:N:P Ratio
100:20:4
Actual
๐Ÿงซ Sludge Management
Sludge management parameters for activated sludge process control.
๐Ÿงซ Activated Sludge Parameters
๐Ÿ“Š Sludge Results
Parameter Value Unit Status
F/M Ratio - lb BOD/lb MLVSS/d -
MCRT (Sludge Age) - days -
SVI - mL/g -
MLSS Inventory - lbs -
WAS Solids - lbs/day -
RAS Rate - % of Q -
๐Ÿ’จ Oxygen & Aeration
๐Ÿ’จ Oxygen Requirements
Oโ‚‚ Required
-
lb Oโ‚‚/d
Peak Demand
-
lb Oโ‚‚/hr
Airflow
-
CFM
๐Ÿงฎ Enhanced Calculators Auto-Calculate
F/M Ratio
0.25 lb BOD/lb MLVSS/day
โœ“ Optimal
Target: 0.2 - 0.5
SVI
120 mL/g
โœ“ Good Settling
Target: 80 - 150
SRT (Sludge Age)
10 days
โœ“ Optimal
Target: 5 - 15 days
MLSS Inventory
25,000
lbs
โœ“ Normal
โ†’ Stable

โฑ๏ธ Detention Time Calculator Auto

MG
MGD
Detention Time
6.86
hours
HRT = (Volume ร— 24) / Flow = (1.0 MG ร— 24) / 3.5 MGD = 6.86 hrs

๐Ÿ“ Surface Overflow Rate Auto

MGD
ft
Surface Overflow Rate
348
GPD/sq ft
โœ“ Good (300-800 typical)
SOR = Flow / Area = 3,500,000 GPD / 10,053 sq ft = 348 GPD/ftยฒ

๐ŸŒŠ Weir Loading Rate Auto

MGD
ft
Weir Loading
7,000
GPD/ft
โœ“ Good (<10,000 typical)
WLR = Flow / Weir Length = 3,500,000 / 500 = 7,000 GPD/ft

๐Ÿ’จ Oxygen Requirement Auto

Oxygen Required
8,320
lb Oโ‚‚/day
347 lb/hr
Oโ‚‚ = 1.5ร—BOD + 4.6ร—TKN = 1.5ร—5000 + 4.6ร—400 = 8,320 lb/d

๐Ÿ’ฐ Chemical Cost Calculator Auto

Daily Chemical Cost
$365
per day
$10,950/month โ€ข $133,225/year
lbs/d = Flow ร— Dose ร— 8.34 = 3.5 ร— 50 ร— 8.34 = 1,460 lb/d ร— $0.25 = $365/d

๐Ÿ“… SRT / Sludge Age Auto

Sludge Retention Time
15.0
days
โœ“ Good for nitrification
SRT = (Vol ร— MLSS ร— 8.34) / (WAS ร— WAS_TSS ร— 8.34)
๐Ÿ“ˆ Statistical Process Control (SPC) Charts NEW v9.9.16

Monitor process stability with control charts. UCL/LCL automatically calculated from your data. Out-of-control points trigger alerts.

๐Ÿ“Š DO Control Chart

โœ“ In Control
UCL (+3ฯƒ)
3.2
UWL (+2ฯƒ)
2.9
CL (Mean)
2.3
LWL (-2ฯƒ)
1.7
LCL (-3ฯƒ)
1.4
Std Dev (ฯƒ)
0.30
Data Points
30
Out of Control
0
Cp Index
1.33
Cpk Index
1.21

๐Ÿ“ Add Data Point

โš ๏ธ Western Electric Rules (Out-of-Control Detection)

Rule 1: 1 point beyond 3ฯƒ (UCL/LCL)
โœ“ Pass
Rule 2: 2 of 3 points beyond 2ฯƒ (same side)
โœ“ Pass
Rule 3: 4 of 5 points beyond 1ฯƒ (same side)
โœ“ Pass
Rule 4: 8 consecutive points on same side of CL
โœ“ Pass

๐Ÿ’จ AERATION & ENERGY

๐Ÿ“ Jump to Section
๐Ÿ’จ
Oxygen Transfer
๐ŸŒ€
Blower
โšก
Energy

๐Ÿ’จ Aeration & Energy

Oxygen transfer, blower performance, and energy optimization

๐Ÿ’จ Oxygen Transfer Efficiency (OTE)
Calculate actual oxygen transfer rate from standard conditions
Theta Correction-
AOTR-lb Oโ‚‚/hr
Transfer Efficiency-%
๐ŸŒ€ Blower Performance
Brake HP-HP
Motor HP (w/ SF)-HP
Power Draw-kW
โšก Energy Cost Analysis

Daily kWh

-

Monthly Cost

-

Annual Cost

-

kWh/MG

-

๐Ÿงช CHEMICAL SYSTEMS

๐Ÿ“ Jump to Calculator
๐ŸŽฏ
P Removal
โ˜ฃ๏ธ
Chlorine
โฑ๏ธ
CT Calc
๐Ÿ’Š
Polymer
โš—๏ธ
Alkalinity
๐Ÿงช
Dechlor
๐Ÿ”ถ
Coagulant
โš–๏ธ
pH Adjust
๐ŸŒฑ
Carbon
๐Ÿ‘ƒ
Odor
๐Ÿงซ
Dilution
๐Ÿ“ฆ
Inventory

โš—๏ธ Chemical Systems

Chemical feed optimization, dosing calculations, and disinfection

๐ŸŽฏ Chemical Feed Optimizer
Optimize coagulant/flocculant dosing for phosphorus removal

Me:P Ratio

-

Dose (mg/L)

-

Feed Rate (gpd)

-

Daily Cost

-

โ˜ฃ๏ธ Chlorine Disinfection
Clโ‚‚ Required-lb/day
Solution Feed-gpd
CT Value-mgยทmin/L
โฑ๏ธ CT Disinfection Calculator NEW v9.9.29

Calculate CT (Concentration ร— Time) for disinfection compliance. CT values based on EPA Guidance Manual.

*Cryptosporidium requires UV or ozone; chlorine CT shown for reference only
CT Achieved
15.0
mgยทmin/L
CT Required
104
mgยทmin/L
CT Ratio
0.14
achieved/required
Status
โŒ FAIL
Increase residual or time
๐Ÿ“Š Log Inactivation Achieved (at current CT)
Giardia
0.4
log
Virus
3.8
log
E. coli
5.0+
log
Crypto*
<0.5
log
๐Ÿ’ก To Achieve Compliance:
Increase chlorine residual to 1.7 mg/L OR increase contact time to 208 minutes
๐Ÿ“‹ CT Reference Table (Free Chlorine at 20ยฐC, pH 7)
Pathogen 1-log 2-log 3-log 4-log
Giardia lamblia3569104138
Viruses1234
E. coli0.030.060.090.12
Cryptosporidium*N/AN/AN/AN/A
*Cryptosporidium is resistant to chlorine. Use UV (40 mJ/cmยฒ) or ozone for inactivation.
๐Ÿงซ Jar Test Optimizer Coagulant & Polymer

Record jar test results to determine optimal chemical doses and costs.

โš™๏ธ Test Setup

1% = 10,000 mg/L
๐Ÿ’‰ Syringe Dose Calculator

๐Ÿงช Jar Test Results (6 Jars)

Enter coagulant dose and results for each jar. Leave unused jars blank.
Jar # Coag Dose
(mg/L)
Polymer
(mg/L)
Flash Mix
pH
Floc Size
(1-5)
Settle Time
(min)
Final Turb
(NTU)
Final pH
1
2
3
4
5
6

๐Ÿ“š Jar Test Reference Guide

Floc Size Scale:
1 = Pin floc (poor)
2 = Small, slow settling
3 = Medium, good
4 = Large, fast settling
5 = Extra large, excellent
Typical Doses:
Alum: 10-50 mg/L
Ferric: 10-50 mg/L
PAC: 5-30 mg/L
Polymer: 0.5-3 mg/L
Optimal pH Ranges:
Alum: 5.5-7.5
Ferric: 4.0-9.0
PAC: 5.0-8.5
Lime: >10.5
๐Ÿ’Š Polymer Dosing
Dry Tons/Day-DT/day
Polymer Required-lb/day
Solution Feed-gpm
โš—๏ธ Alkalinity Adjustment
Alk Increase Needed-mg/L
Chemical Required-lb/day
Solution Feed-gpd
๐Ÿ“ฆ Chemical Inventory Tracker Track & Alert

Track chemical inventory levels, usage rates, and receive low-stock alerts.

Chemical Current (gal) Daily Use Days Left Reorder Pt Status Actions

โš ๏ธ Low Stock

0

๐Ÿ“ฆ Total Items

0

๐Ÿ’ฐ Inventory Value

$0

๐Ÿ“… Avg Days Supply

0

๐Ÿ”ง MAINTENANCE

Equipment tracking, PM schedules, runtime hours, and calibration management

๐Ÿ“ Jump to Section
๐Ÿ”ง
PM Tracker
๐Ÿ“
Calibration
๐Ÿ“ฆ
Spare Parts
๐Ÿ“
Work Orders
๐Ÿ”ง Equipment PM Tracker NEW v9.9.16

Track equipment runtime hours, maintenance schedules, and costs. Get alerts before PM is due.

โš ๏ธ Overdue

0

๐Ÿ“… Due Soon (7d)

0

โœ“ Up to Date

0

๐Ÿ’ฐ YTD Cost

$0

Equipment Category Runtime (hrs) Last PM Interval Next Due Status Actions

๐Ÿ“œ Recent Maintenance History

๐Ÿ“‹
No maintenance history yet
๐Ÿ”ฌ Calibration Tracking
InstrumentLocationLast CalDueStatus
DO Probe #1Aeration Basin2024-11-202024-12-20OK
pH AnalyzerEffluent2024-11-252024-12-25OK
Flow MeterInfluent2024-06-012024-12-01Overdue
TurbidityEffluent2024-11-012024-12-01Due Soon
๐Ÿ› ๏ธ Work Order Log
WO-2024-142In Progress
Blower #2 bearing replacement
Assigned: John D. | Due: 12/10/2024
WO-2024-143Urgent
UV lamp replacement - Bank A
Assigned: Mike S. | Due: 12/08/2024
๐Ÿ“ Instrument Calibration Tracker NEW v9.9.27

Track instrument calibrations, due dates, and compliance. Get alerts before calibrations expire.

โš ๏ธ Overdue

1

๐Ÿ“… Due 7 Days

3

โœ“ Current

12

๐Ÿ“Š Compliance

94%

Instrument Location Last Cal Next Due Freq Status Action
๐Ÿ“ก ONLINE PROCESS ANALYZERS
DO Probe #1
Hach LDO2
Aeration Basin 1 12/01/24 12/15/24 14 days OVERDUE
DO Probe #2
Hach LDO2
Aeration Basin 2 12/08/24 12/22/24 14 days OVERDUE
pH Probe - Influent
Hach pHD sc
Influent Structure 12/20/24 12/27/24 7 days DUE TODAY
pH Probe - Effluent
Hach pHD sc
Effluent 12/22/24 12/29/24 7 days DUE SOON
ORP Probe
Hach DRD8E
Anoxic Zone 12/15/24 01/15/25 30 days CURRENT
TSS Analyzer - MLSS
Hach Solitax sc
Aeration Basin 12/10/24 01/10/25 30 days CURRENT
TSS Analyzer - RAS
Hach Solitax sc
RAS Line 12/10/24 01/10/25 30 days CURRENT
Turbidity - Effluent
Hach TU5300 sc
Effluent 12/15/24 01/15/25 30 days CURRENT
Chlorine Analyzer
Hach CL17sc
Disinfection 12/10/24 01/10/25 30 days CURRENT
Ammonia Analyzer
Hach Amtax sc
Effluent 12/01/24 01/01/25 30 days CURRENT
๐Ÿ“Š FLOW METERS
Influent Flow Meter
Endress+Hauser Promag
Influent 06/15/24 06/15/25 Annual CURRENT
Effluent Flow Meter
Endress+Hauser Promag
Effluent 06/15/24 06/15/25 Annual CURRENT
RAS Flow Meter
Endress+Hauser Promag
RAS Pump Station 06/15/24 06/15/25 Annual CURRENT
WAS Flow Meter
Endress+Hauser Promag
WAS Pump Station 06/15/24 06/15/25 Annual CURRENT
๐Ÿ“ LEVEL INSTRUMENTS
Wet Well Level
Siemens Ultrasonic
Lift Station 09/01/24 03/01/25 6 months CURRENT
Clarifier Blanket
Hach Sludge Blanket
Secondary Clarifier 11/01/24 02/01/25 Quarterly CURRENT
๐Ÿ”ฌ BENCHTOP LAB EQUIPMENT
Benchtop pH Meter
Hach HQ440d
Laboratory 12/26/24 12/27/24 Daily DUE TODAY
Benchtop DO Meter
YSI ProODO
Laboratory 12/20/24 12/27/24 Weekly DUE TODAY
Benchtop Conductivity
Hach HQ440d
Laboratory 12/01/24 01/01/25 Monthly CURRENT
Turbidimeter
Hach 2100Q
Laboratory 12/15/24 01/15/25 Monthly CURRENT
Spectrophotometer
Hach DR3900
Laboratory 12/01/24 01/01/25 Monthly CURRENT
Analytical Balance
Mettler Toledo
Laboratory 06/01/24 06/01/25 Annual CURRENT
BOD Incubator Thermo
NIST Traceable
Laboratory 12/01/24 01/01/25 Monthly CURRENT
Oven Thermometer
NIST Traceable
Laboratory 12/01/24 01/01/25 Monthly CURRENT
Pipettes (Set of 4)
Eppendorf
Laboratory 06/01/24 06/01/25 Annual CURRENT
โš ๏ธ SAFETY / CONFINED SPACE
4-Gas Monitor #1
MSA Altair 4XR
Operations 12/20/24 12/30/24 Monthly DUE SOON
4-Gas Monitor #2
MSA Altair 4XR
Operations 12/20/24 12/30/24 Monthly DUE SOON
Hโ‚‚S Area Monitor
RKI GD-70D
Headworks 09/01/24 03/01/25 6 months CURRENT
Chlorine Area Monitor
Honeywell Manning
Disinfection Bldg 09/01/24 03/01/25 6 months CURRENT

๐Ÿ“‹ Recent Calibration Log

pH Probe #1 calibrated - 2-point (4.0, 7.0) 12/20/24 08:15 - J. Smith
DO Probe #1 calibrated - Zero/Span 12/01/24 07:30 - M. Johnson
Turbidity Meter verified - 20 NTU standard 12/15/24 14:00 - J. Smith

๐Ÿ“‘ REPORTS

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๐Ÿ“‘
Executive
๐Ÿข
Branding
๐Ÿ“„
Report Type
๐Ÿ‘๏ธ
Preview
๐Ÿ“ค
Export
๐Ÿ“‘ Executive Report Generator GENIUS v9.9.19
REPORT DATE
${new Date().toLocaleDateString()}
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PLANT STATUS
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Health: 87%
DATA SOURCES
8
GENIUS systems
LAST GENERATED
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๐Ÿ“‹ REPORT SECTIONS (Click to toggle)
๐Ÿ‘๏ธ REPORT PREVIEW
๐Ÿ“‘
Click โšก Generate to create your executive report
Report will pull data from all 8 GENIUS systems
๐Ÿ“ค EXPORT OPTIONS
๐Ÿ“… SCHEDULED REPORTS
Coming Soon
๐Ÿข Company Branding
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๐Ÿ“…

Daily Operations Report

Date, plant values, checklist status, daily notes, operator signature

โš™๏ธ

Process Summary Report

All calculator results, status indicators, formulas used

๐Ÿญ

Client Visit Report

Plant profile, findings, recommendations, action items

๐Ÿงฎ

Calculation Report

All inputs, outputs, formulas, with professional formatting

๐Ÿ“‹ Report Configuration

๐Ÿญ Plant Information

๐Ÿ“ Notes & Comments

๐Ÿ“ค Quick Export

๐Ÿ“ HYDRAULICS

๐Ÿ“ Jump to Section (15+ Calculators)
๐Ÿงซ
OLR
โš–๏ธ
F/M
๐Ÿงช
SVI
โ˜ฃ๏ธ
Chlorine
๐Ÿ’Š
Polymer
๐Ÿ”ถ
Coagulant
โš—๏ธ
pH Adjust
๐ŸŒฑ
Carbon
๐Ÿ‘ƒ
Odor
๐Ÿงซ
Dilution
๐Ÿงฎ Process Calculators
๐Ÿงซ Organic Loading Rate (OLR)
BOD Loading-lb/day
Organic Loading Rate-lb BOD/1000 cf/day
โš–๏ธ F/M Ratio (Food to Microorganism)
MLVSS Mass-lb
F/M Ratio-lb BOD/lb MLVSS/day
Status-
โฑ๏ธ Sludge Retention Time (SRT)
System Solids-lb
Solids Wasted-lb/day
SRT (Sludge Age)-days
Status-
๐Ÿ• Hydraulic Detention Time (HRT)
Detention Time-hours
Status-
๐Ÿ“‰ BOD Removal Efficiency
Removal Efficiency: - %
BOD Removed-mg/L
Removal Efficiency-%
Status-
๐Ÿงช Sludge Volume Index (SVI)
SVI-mL/g
Settling Quality-
๐Ÿšฟ Waste Activated Sludge (WAS)
Required WAS Flow-GPD
Solids Wasted-lb/day
๐Ÿ”„ Return Activated Sludge (RAS)
RAS Ratio-%
RAS Flow-MGD
โ˜ฃ๏ธ Chlorine Dosing
Chlorine Required-lb/day
Solution (12.5%)-gal/day
๐Ÿ’Š Polymer Dosing
Dry Solids-lb/hr
Polymer Required-lb/hr
๐Ÿงช Dechlorination (Sulfite)
๐Ÿ’ก Dechlorination Info: Sodium bisulfite (SBS) or sulfur dioxide removes chlorine residual before discharge. Typical ratio: 1.0-1.5 mg SBS per 1.0 mg Clโ‚‚. Adjust SG and Strength from your SDS.
SBS Required (100%)-lb/day
Solution Feed Rate-gal/day
Daily Cost-$/day
๐Ÿ”ถ Coagulant Dosing (Ferric/Alum)
๐Ÿ’ก Coagulation: Ferric chloride and alum are used for phosphorus removal and TSS reduction. Adjust SG and Strength from your SDS.
Chemical Required-lb/day
Solution Feed Rate-gal/day
Feed Pump Setting-gal/hr
Daily Cost-$/day
โš–๏ธ pH Adjustment
๐Ÿ’ก pH Control: Caustic (NaOH) raises pH. Sulfuric acid (Hโ‚‚SOโ‚„) or COโ‚‚ lowers pH. Adjust SG and Strength from your SDS.
Estimated Chemical-lb/day
Solution Feed-gal/day
Daily Cost-$/day
Notes-
๐ŸŒฑ Carbon Source Dosing
๐Ÿ’ก Denitrification Carbon: External carbon needed when BOD:N ratio is too low. Adjust SG and C:N ratio from your SDS.
N Load Removed-lb N/day
Carbon Required-lb/day
Feed Rate-gal/day
Daily Cost-$/day
๐Ÿ‘ƒ Odor Control Dosing
๐Ÿ’ก Hโ‚‚S Control: Ferrous/ferric salts, nitrate, or oxidizers control hydrogen sulfide. Adjust SG and Strength from your SDS.
Chemical Required-lb/day
Feed Rate-gal/day
Daily Cost-$/day
๐Ÿงซ Chemical Dilution Calculator
๐Ÿ’ก Dilution Formula: Cโ‚Vโ‚ = Cโ‚‚Vโ‚‚ (Concentration ร— Volume of stock = Concentration ร— Volume of diluted)
Stock Solution Needed-gallons
Water to Add-gallons
Dilution Ratio-: 1
โ›ฝ Pumping & Hydraulics
Water Horsepower-HP
Brake Horsepower-HP
Motor Horsepower-HP
Power Draw-kW
โš—๏ธ Alkalinity Requirements
Alkalinity Consumed-mg/L as CaCO3
Daily Alk Required-lb/day
๐ŸŒŠ Surface Overflow Rate (SOR)
Surface Overflow Rate-gpd/sq ft-
Status-
๐Ÿ”„ Weir Overflow Rate (WOR)
Weir Overflow Rate-gpd/ft-
Status-
๐Ÿ“Š Solids Loading Rate (SLR)
Solids Loading Rate-lb/sq ft/day-
Status-
โฑ๏ธ Mean Cell Residence Time (MCRT)
System Solids-lb
Solids Wasted-lb/day
MCRT-days
Status-
๐Ÿ’จ Oxygen Uptake Rate (OUR)
OUR-mg/L/hr
SOUR-mg O2/g MLVSS/hr
Status-
๐Ÿ“… Sludge Age Calculator (Multiple Methods) 5 Methods

Calculate SRT/MCRT using different methods. Compare results to verify accuracy.

๐Ÿ“Š System Parameters

๐Ÿ“Š Method 1: Standard SRT

SRT = Total System Solids รท Solids Wasted per Day

๐Ÿ“š SRT Guidelines by Process Type

Process TypeSRT (days)F/M (lb/lb/d)Notes
High-Rate AS2-40.4-1.0BOD removal only
Conventional AS4-80.2-0.4Good BOD removal
Nitrification8-150.1-0.2Complete nitrification
Extended Aeration15-300.05-0.1Low sludge production
MBR Systems15-500.05-0.15High MLSS operation
๐ŸŒก๏ธ Min SRT for Nitrification:
20ยฐC: 4-5 days
15ยฐC: 6-8 days
10ยฐC: 10-15 days
5ยฐC: 20+ days
โš ๏ธ Common Issues:
SRT too low: Poor nitrification
SRT too high: Pin floc, high DO demand
Variable SRT: Inconsistent performance
๐Ÿงช Ammonia/TKN Removal
NH3-N Removed-mg/L
Removal Efficiency-%
Mass Removed-lb/day
Alkalinity Consumed-lb/day as CaCO3
๐Ÿ”ฌ Phosphorus Removal
TP Removed-mg/L
Removal Efficiency-%
Chemical Dose Required-lb/day
Molar Ratio-mol/mol P
๐ŸŒฟ Nutrient Balance Calculator BNR Analysis

Complete nitrogen and phosphorus balance through the treatment process.

๐Ÿ“ฅ Influent Characteristics

โš™๏ธ Process Configuration

๐ŸŽฏ Effluent Targets/Limits

โš—๏ธ Chemical Addition (if needed)

๐Ÿ“š Nutrient Removal Guidelines

ProcessTN AchievableTP AchievableKey Requirements
Conventional25-35 mg/L4-6 mg/LBOD removal only
Nitrification20-30 mg/L4-6 mg/LSRT >8d @ 20ยฐC
Nit-Denit8-12 mg/L4-6 mg/LAnoxic zone, carbon
BNR (MLE)6-10 mg/L1-2 mg/LBio-P + denit
Advanced BNR3-5 mg/L0.1-0.5 mg/LMultiple stages, chem-P
N Stoichiometry:
Nitrification: 4.6 lb Oโ‚‚/lb N
Denitrification: 2.9 lb BOD/lb N
Alkalinity: 7.1 lb CaCOโ‚ƒ/lb N (nit)
Recovery: 3.6 lb CaCOโ‚ƒ/lb N (denit)
P Stoichiometry:
Bio-P uptake: 0.01-0.02 lb P/lb BOD
Alum: 10:1 Al:P molar ratio
Ferric: 2:1 Fe:P molar ratio
Sludge P content: 2-7% in EBPR
๐Ÿงซ TSS/VSS Removal Efficiency
TSS Removal-%
VSS Removal-%
VSS/TSS Ratio (In)-
VSS/TSS Ratio (Out)-
โš™๏ธ Grit Chamber Sizing
Volume Required-cu ft
Length Required-ft
Surface Area-sq ft
Horizontal Velocity-ft/min
๐Ÿ”ฅ Anaerobic Digester Loading
VS Loading-lb VS/day
Volumetric Loading-lb VS/cu ft/day
HRT-days
Status-
>
๐Ÿ”ฌ MLSS/MLVSS Calculator
MLVSS-mg/L
Total Solids-lb
Volatile Solids-lb
๐ŸŒŠ Clarifier Loading Rates
Surface Overflow Rate-gpd/sq ft
Weir Overflow Rate-gpd/ft
Solids Loading-lb/sq ft/day
Status-
๐Ÿ’จ Oxygen Transfer Efficiency
Field OTE-%
O2 Delivered-lb O2/hr
SOTR-lb O2/hr
๐Ÿ”ฅ Digester Gas Production
Total Gas-cf/day
Methane Volume-cf/day
Energy Value-BTU/day
Power Potential-kW
๐Ÿ—œ๏ธ Belt Press / Centrifuge Calculator Dewatering

Comprehensive dewatering analysis for belt filter press and centrifuge operations.

โš™๏ธ Equipment Configuration

๐Ÿ“ฅ Feed Sludge Characteristics

๐Ÿ“Š Performance Parameters

โš—๏ธ Polymer Conditioning

๐Ÿš› Disposal

๐Ÿ“š Dewatering Equipment Guidelines

ParameterBelt PressCentrifugeScrew Press
Cake Solids (%)18-2520-3015-25
Capture (%)90-9890-9890-95
Polymer (lb/DT)8-1515-255-10
Energy (kWh/DT)10-2030-605-15
Wash WaterHighNoneLow
Typical Cake Solids:
Primary: 28-34%
WAS: 15-20%
Mixed: 20-28%
Digested: 22-30%
Polymer Dose Range:
Primary: 3-8 lb/DT
WAS: 15-25 lb/DT
Digested: 10-18 lb/DT
Mixed: 8-15 lb/DT
๐Ÿ’จ Blower Air Requirements
Air Required-SCFM
Blower HP (est)-HP
Annual Energy-kWh/yr
โ˜€๏ธ UV Disinfection Calculator Comprehensive

Design and evaluate UV disinfection systems for various applications.

โš™๏ธ System Configuration

๐Ÿ’ง Water Quality Parameters

โ˜ข๏ธ Dose Requirements

๐Ÿ’ฐ Operating Costs

๐Ÿ“š UV Dose Guidelines

PathogenLog ReductionDose (mJ/cmยฒ)
E. coli4-log20-25
Fecal Coliform4-log30-40
Giardia3-log11
Cryptosporidium3-log12
Virus (Adeno)4-log186
CA Title 22 Reuse5-log virus100-140
UVT Guidelines:
Secondary: 55-65%
Tertiary: 65-75%
Reuse: 70-85%
Drinking: >90%
Lamp Types:
LP: 254nm, efficient, longer life
LPHO: Higher output, fewer lamps
MP: Broad spectrum, compact
๐Ÿ”„ Sludge Thickening
Dry Solids In-lb/hr
Thickened Flow-GPM
Solids Captured-lb/hr
Volume Reduction-%
โš–๏ธ Equalization Basin Sizing
Storage Volume-MG
Storage Volume-gallons
Peak-to-Avg Ratio-
๐ŸŒง๏ธ Wet Weather & I/I Calculator Storm Analysis

Analyze wet weather impacts, I&I contribution, and treatment capacity during storm events.

๐Ÿ“Š Baseline (Dry Weather) Conditions

๐ŸŒง๏ธ Storm Event Data

๐Ÿญ Treatment Capacity

๐Ÿ“š Wet Weather Guidelines

ParameterTypical RangeConcern Level
Peak/Avg Flow Ratio2.0-3.0>4.0 = High I&I
I&I Rate (gpd/mi)2,000-5,000>10,000 = Excessive
I&I Rate (gpd/capita)20-50>100 = Excessive
RDII (gal/in/acre)500-2,000>5,000 = High
Peaking Factor2.5-3.5>5.0 = I&I issues
I&I Sources:
Inflow: Direct connections
- Roof drains, sump pumps
- Cross-connections
Infiltration: Groundwater
- Cracked pipes, joints
- Manholes, laterals
Treatment Impacts:
- Diluted influent (low BOD)
- Hydraulic overload
- Solids washout risk
- Reduced SRT
- Nitrification loss
- SSO/bypass risk
๐Ÿงช Chemical Feed Rate
Chemical (dry)-lb/day
Solution Volume-gal/day
Feed Rate-gal/hr
Feed Rate-mL/min
๐Ÿ—‘๏ธ Screenings & Grit Estimation
Screenings-cu ft/day
Screenings-cu yd/month
Grit Volume-cu ft/day
Grit-cu yd/month
๐Ÿ—๏ธ Primary Clarifier Performance
Est. BOD Removal-%
Est. TSS Removal-%
Effluent BOD-mg/L
Effluent TSS-mg/L
๐Ÿ”„ Trickling Filter Loading
Organic Loading-lb BOD/1000 cf/day
Hydraulic Loading-gpd/sq ft
Est. BOD Removal-%
๐ŸŒฑ Biosolids Land Application
Total N-lb/yr
Available N-lb/yr
Land Required-acres
Application Rate-dry tons/acre
๐Ÿ“ Hydraulic Profile Calculator
Calculate water surface elevations (WSE) through treatment units. Enter starting elevation and head losses to generate the hydraulic grade line.

๐Ÿ“ Starting Conditions

๐Ÿญ Unit Process Head Losses (ft)

Enter head loss across each unit at peak flow. Use 0 for units not present.

Preliminary Treatment
Primary Treatment
Secondary Treatment
Tertiary/Effluent
๐Ÿ”ง Pipe Headloss (Hazen-Williams)
Calculate friction headloss in pipes using Hazen-Williams equation
Velocity-ft/s
Friction Loss-ft
Fitting Losses-ft
Total Head Loss-ft
Head Loss per 100 ft-ft/100 ft
๐ŸŒŠ Weir & Orifice Head Loss
Calculate head over weirs and through orifices
Rectangular Weir
Head over Weir: - ft
Circular Orifice
Head Required: - ft
ใ€ฐ๏ธ Open Channel Flow (Manning's)
Calculate flow depth and velocity in open channels using Manning's equation
Normal Depth-ft
Flow Area-sq ft
Wetted Perimeter-ft
Hydraulic Radius-ft
Velocity-ft/s
Froude Number-
โš—๏ธ Chemical Feed Rate Optimizer
Optimize chemical dosing based on target removal and real-time conditions

๐Ÿ“Š Current Conditions

๐Ÿ’Š Chemical Selection

๐ŸŒŠ Equalization Basin Sizing
Size EQ basins for flow and load equalization based on diurnal patterns
๐Ÿ“ˆ Hourly Flow Pattern (24-hr)

Enter flows as % of average (default pattern loaded)

โš ๏ธ Violation Risk Predictor
Predict probability of permit violations based on current performance and variability

๐Ÿ“‹ Permit Limits

๐Ÿ“Š Current Performance (30-day)

โš–๏ธ Mass Balance Calculator
Calculate mass balances for BOD, TSS, nitrogen, and phosphorus through the treatment process

๐Ÿ“ฅ Influent Conditions

Primary Treatment
Secondary Treatment
Tertiary/Chemical
๐Ÿ’จ Oxygen Transfer Efficiency (OTE) Calculator
Calculate actual oxygen transfer rate (AOTR) from standard conditions and evaluate aeration efficiency

๐Ÿ”ง System Parameters

๐ŸŒก๏ธ Process Conditions

๐Ÿ”„ Pump Station Calculator Lift Station

Design and analyze pump stations: wet well sizing, pump selection, cycle times, and energy costs.

๐Ÿ“Š Design Flows

๐Ÿชฃ Wet Well Design

โš™๏ธ Pump Configuration

๐Ÿ’ฐ Energy & Costs

๐Ÿ“š Pump Station Design Guidelines

ParameterTypical RangeNotes
Min Cycle Time5-10 minPrevents motor overheating
Max Starts/Hour6-12Check motor rating
Detention Time<30 minPrevents septicity
Min Velocity2-3 fpsPrevents settling
VFD Savings20-50%Affinity laws (cube of speed)
๐Ÿ”ฌ Membrane Calculator (MBR/RO/UF) Filtration

Design and analyze membrane systems: MBR, UF, MF, RO, and NF applications.

โš™๏ธ System Configuration

๐Ÿ“ˆ Operating Parameters

๐Ÿ”ง Module Specifications

๐Ÿ’ฐ Operating Costs

๐Ÿ“š Membrane Design Guidelines

TypeTypical Flux (GFD)TMP (psi)RecoveryLife (yrs)
MBR10-201-5N/A7-10
UF30-6010-3090-95%5-7
MF40-805-1590-95%5-7
RO15-25150-40075-85%3-5
NF20-3575-15080-90%3-5
๐Ÿซง DAF Calculator (Dissolved Air Flotation) Flotation

Design dissolved air flotation systems for TSS, FOG, and algae removal.

๐Ÿ“Š Design Parameters

๐Ÿ“ฅ Influent Characteristics

โš™๏ธ Design Criteria

๐ŸŽฏ Performance Targets

๐Ÿ’ฐ Operating Costs

๐Ÿ“š DAF Design Guidelines

ParameterTypical RangeNotes
A/S Ratio0.01-0.05lb air/lb solids removed
Recycle Rate20-50%Of influent flow
Saturator Pressure40-80 psiHigher = more air dissolved
Hydraulic Loading2-6 GPM/sfBased on total flow
Solids Loading1-4 lb/sf/dayTSS basis
Float Solids2-6%Typical without thickening

๐Ÿ—‘๏ธ SOLIDS HANDLING

๐Ÿ“ Jump to Section
๐Ÿšฟ
WAS Calc
โš™๏ธ
Adv WAS
๐Ÿ”„
RAS Calc
๐ŸŒŠ
Clarifier
๐Ÿ“
Blanket
๐Ÿ”„
Thickener
๐Ÿ”ฅ
Biogas
๐Ÿš›
Septage
๐Ÿ“Š Sludge Production Estimator
Estimate daily sludge production from primary and secondary treatment
๐Ÿšฟ WAS (Waste Activated Sludge) Calculator
Calculate WAS rate based on target SRT
Aeration Inventory-lb
WAS Rate (mass)-lb/day
WAS Rate (volume)-gpd
WAS Rate-gpm
๐Ÿšฟ Advanced WAS Calculator Multiple Methods

Calculate WAS using different control strategies. Select your preferred method.

๐Ÿ“… SRT (Solids Retention Time) Control

Most common method. WAS rate = Total solids inventory รท Target SRT

โฑ๏ธ MCRT (Mean Cell Residence Time) Control

Accounts for solids in clarifier and effluent losses

โš–๏ธ F/M (Food to Microorganism) Control

Control based on organic loading. Target F/M typically 0.2-0.5 for conventional activated sludge

๐Ÿ“Š MLSS (Constant MLSS) Control

Maintain target MLSS by wasting growth. Simple operational control.

๐Ÿ“š Typical WAS Control Parameters

Process TypeSRT (days)F/MMLSS (mg/L)
Conventional AS5-150.2-0.51,500-3,000
Extended Aeration20-400.04-0.13,000-6,000
Contact Stabilization5-100.2-0.61,000-3,000
SBR10-300.04-0.12,000-5,000
MBR10-250.1-0.48,000-12,000
Nitrification10-200.1-0.32,000-4,000
๐Ÿ”„ RAS (Return Activated Sludge) Calculator Multiple Methods

Calculate optimal RAS rate to maintain target MLSS and prevent settling issues.

๐Ÿ“Š RAS Ratio Method

Calculate RAS based on desired RAS/Q ratio. Typical range: 25-100% of influent flow.

๐ŸŽฏ Target MLSS Method

Calculate RAS rate needed to achieve target MLSS based on mass balance.

๐Ÿ“ Sludge Blanket Control Method

Adjust RAS to maintain target sludge blanket depth in clarifier.

๐Ÿ“š RAS Operating Guidelines

ParameterTypical RangeNotes
RAS Ratio (RAS/Q)25-100%Higher during high flows
RAS Concentration6,000-12,000 mg/LShould be 2-4x MLSS
Sludge Blanket1-3 ftKeep below weir level
RAS TSS/MLSS Ratio2.0-4.0Lower indicates poor settling
Clarifier SLR20-35 lb/sf/dayPeak: 50 lb/sf/day max
โš ๏ธ RAS Troubleshooting:
  • Rising blanket: Increase RAS rate or reduce WAS
  • Low RAS concentration: Check for denitrification, reduce RAS rate
  • RAS > 100%: Check for hydraulic issues, high SVI
  • Thin blanket: May reduce RAS, but monitor effluent TSS
๐ŸŠ Clarifier Loading Calculator SLR, SOR, WLR

Calculate solids loading rate (SLR), surface overflow rate (SOR), and weir loading rate (WLR) for secondary clarifiers.

๐Ÿ—๏ธ Clarifier Configuration

Perimeter = ฯ€D

๐Ÿ’ง Flow & Solids Data

๐Ÿ“š Secondary Clarifier Design Criteria

ParameterAveragePeakUnits
Surface Overflow Rate (SOR)400-8001,000-1,200gpd/sf
Solids Loading Rate (SLR)20-3050lb/sf/day
Weir Loading Rate (WLR)10,000-20,00030,000gpd/lf
Hydraulic Detention Time1.5-2.5-hours
Side Water Depth12-15-ft
โœ“ Good Settling
SVI < 120, SLR < 25
โš ๏ธ Fair Settling
SVI 120-180, SLR 25-35
โœ— Poor Settling
SVI > 180, SLR > 35
๐Ÿงช Sludge Judge / Settleometer 30-Min Settling Test

Record settling test readings and calculate SVI, settling rate, and sludge characteristics.

โš™๏ธ Test Setup

๐Ÿ“ Settling Readings (mL)

Enter settled sludge volume at each time interval. Start with initial volume (usually 1000 or 2000 mL).

๐Ÿ“š SVI Interpretation Guide

SVI (mL/g)Settling QualitySludge ConditionAction
< 80ExcellentOld sludge, pin floc possibleMay reduce WAS, check effluent TSS
80-120GoodNormal, healthy sludgeMaintain current operations
120-150FairLight bulking beginningMonitor closely, check DO/nutrients
150-200PoorBulking sludgeIdentify filaments, adjust process
> 200Very PoorSevere bulkingImmediate action required
SVI Formula:
SVI = (Settled Vol mL ร— 1000) / (Cylinder mL ร— MLSS mg/L)
Typical Targets:
Conventional: 80-150
Extended Air: 100-200
MBR: N/A (no settling)
๐Ÿ”„ Gravity Thickener Loading
Surface Area-sf
Hydraulic Loading-gpd/sf
Solids Loading-lb/sf/day
Status-
๐Ÿ—œ๏ธ Dewatering Performance
โš–๏ธ Plant Mass Balance
For comprehensive mass balance calculations including BOD, TSS, TKN, and TP through the entire treatment train, see the Mass Balance Calculator in the ๐Ÿ“ Hydraulics tab.
๐Ÿ”ฅ Biogas & Digester Calculator Comprehensive

Complete anaerobic digester analysis: loading, gas production, heating, and energy recovery.

๐Ÿ—๏ธ Digester Configuration

๐Ÿ“ฅ Sludge Feed

โšก Performance Parameters

๐Ÿ’ฐ Energy & Economics

๐Ÿ“š Digester Design Guidelines

ParameterStandard RateHigh RateTwo-Stage
SRT (days)30-6010-2010-15 (1st)
VS Loading (lb/cf/d)0.03-0.100.15-0.400.25-0.50
VS Destruction (%)35-5050-6555-65
Temperature (ยฐF)Ambient95 (meso)95-131
MixingNoneContinuousBoth stages
Gas Composition:
CHโ‚„: 60-70%
COโ‚‚: 30-40%
Hโ‚‚S: 0.1-0.5%
Trace: Nโ‚‚, Hโ‚‚, etc.
Energy Content:
Biogas: ~600 BTU/cf
Methane: ~1,000 BTU/cf
1 cf CHโ‚„ = 0.01 therm
1 kWh = 3,412 BTU
๐Ÿš› Septage Receiving Calculator Hauled Waste

Calculate septage receiving capacity, loading impacts, and revenue potential.

๐Ÿญ Plant Baseline

๐Ÿš› Septage Characteristics

๐Ÿ“ฅ Receiving Operations

๐Ÿ’ฐ Economics

๐Ÿ“š Typical Septage Characteristics

ParameterResidentialCommercialGrease TrapPortable
BOD (mg/L)2,000-10,0001,500-5,00015,000-150,0005,000-15,000
TSS (mg/L)5,000-30,0003,000-15,0005,000-50,00010,000-40,000
TKN (mg/L)200-1,000150-50050-200500-2,000
FOG (mg/L)5,000-15,0003,000-10,00050,000-150,0002,000-8,000
โš ๏ธ Considerations:
- Slug loading impacts
- FOG handling capacity
- Grit removal needs
- Odor control
- Screenings increase
โœ… Best Practices:
- Meter all loads
- Sample periodically
- Controlled discharge rate
- Spread throughout day
- Maintain manifest records
๐Ÿ“ฆ Sludge Box (Dry) Haul Calculator Roll-off/Dumpster

Calculate sludge box capacity, hauling frequency, and costs for dewatered cake disposal.

๐Ÿ—œ๏ธ Cake Production

๐Ÿ“ฆ Box Configuration

๐Ÿ’ฐ Hauling & Disposal Costs

๐Ÿ“š Sludge Box Reference

Box SizeCapacity (CY)Typical Weight LimitBest For
Lugger Box10-158-12 tonsSmall plants, limited space
20 CY Roll-off2015-18 tonsSmall-medium plants
30 CY Roll-off3020-22 tonsMost common size
40 CY Roll-off4020-25 tonsLarge plants, light cake
Typical Cake Densities:
Belt Press (20%): 1,000-1,200 lb/cy
Centrifuge (25%): 1,200-1,400 lb/cy
Plate Press (35%): 1,400-1,600 lb/cy
Dried (90%+): 800-1,000 lb/cy
Cost Factors:
- Haul distance
- Fuel prices
- Disposal facility type
- Weekend/holiday rates
- Contamination charges

๐Ÿ“ INTERACTIVE NOMOGRAPHS

Visual calculation tools for process, chemical & solids parameters

๐Ÿ“– How to Use Nomographs - Reference Guide
โ–ผ
โš™๏ธ Process/Biological Nomographs

๐Ÿ“Š SRT/MCRT Calculator

Sludge Retention Time
Solids Inventory
--
lbs
รท
Solids Wasted/Day
--
lbs/day
=
SRT
--
days
SRT Scale (days)
051015202530+
Formula: SRT = (Vol ร— MLSS ร— 8.34) รท (WAS Flow ร— WAS Conc ร— 8.34 รท 1,000,000) โ€ข Typical: 5-15 days (conventional), 15-30 days (extended aeration)

๐Ÿ“Š F/M Ratio Calculator

Food to Microorganism
BOD Loading
--
lbs/day
รท
MLVSS Inventory
--
lbs
=
F/M Ratio
--
lb BOD/lb MLVSS/day
F/M Scale
00.10.20.30.40.50.6+
Formula: F/M = (Flow ร— BOD ร— 8.34) รท (Vol ร— MLVSS ร— 8.34) โ€ข Typical: 0.05-0.15 (extended aeration), 0.2-0.5 (conventional)

๐Ÿ“Š Clarifier Loading Calculator

Surface & Solids Loading
Surface Area
--
sq ft
Overflow Rate
--
gpd/sq ft
--
Solids Loading
--
lbs/day/sq ft
--
Overflow Rate typical: 400-800 gpd/sf (avg), <1,200 (peak) โ€ข Solids Loading typical: 20-30 lbs/day/sf (max ~50)

๐Ÿ“Š SVI & Settling Calculator

Sludge Volume Index
Settled Volume
--
mL/L
ร—
1000 รท MLSS
--
factor
=
SVI
--
mL/g
SVI Scale (mL/g)
050100150200250300+
Enter values to see SVI interpretation
Formula: SVI = (Settled Volume ร— 1000) รท MLSS โ€ข Good: 80-150 mL/g โ€ข Bulking: >150 mL/g โ€ข Pinpoint floc: <50 mL/g
โš—๏ธ Chemical/Disinfection Nomographs

๐Ÿ“Š Chlorine CT Calculator

Contact Time ร— Concentration
Clโ‚‚ Residual
--
mg/L
ร—
Contact Time
--
minutes
=
CT Value
--
mgยทmin/L
CT Requirements (EPA) at pH 7, 20ยฐC:
2-log Giardia
CT โ‰ฅ 25
3-log Giardia
CT โ‰ฅ 37
4-log Virus
CT โ‰ฅ 4
Enter values to see disinfection status
Formula: CT = C ร— T โ€ข Higher pH reduces HOCl effectiveness โ€ข Lower temp requires higher CT

๐Ÿ“Š Chlorine Dosing Calculator

Feed Rate & Usage
Clโ‚‚ Required
--
lbs/day
Solution Feed
--
gpd
Pump Setting
--
gph
Monthly Usage
--
gallons
Formula: lbs/day = Flow ร— Dose ร— 8.34 โ€ข GPD = lbs/day รท (8.34 ร— SG ร— %/100)

๐Ÿ“Š pH Adjustment Calculator

Caustic/Acid Dosing
Enter values to calculate
NaOH (50%) Dose
--
gpd
Lime (Ca(OH)โ‚‚) Dose
--
lbs/day
Soda Ash Dose
--
lbs/day
Note: Estimates based on alkalinity buffering. Actual dose varies with water chemistry. Jar test recommended.
๐Ÿš› Solids/Digestion Nomographs

๐Ÿ“Š Digester Gas Production

Methane & Energy
VS Destroyed
--
lbs/day
Total Gas
--
cf/day
Methane
--
cf/day
Energy Value
--
BTU/day
Equiv. kWh: --
Equiv. Therms: --
$/day @ $0.12/kWh: --
Typical: 12-18 cf gas/lb VS destroyed โ€ข Methane: 60-70% โ€ข Energy: ~600 BTU/cf methane

๐Ÿ“Š Dewatering & Polymer Calculator

Belt Press / Centrifuge
Dry Solids
--
lbs/hr
Cake Production
--
lbs/hr wet
Polymer Usage
--
lbs/hr
Dry Tons/Day
--
DT/day (8hr)
Typical polymer: 15-25 lbs/DT โ€ข Belt press cake: 18-25% โ€ข Centrifuge cake: 22-30%

๐Ÿ“Š Thickener Loading Calculator

GBT / DAF / Gravity
Solids Loading
--
lbs/hr/sf
--
Hydraulic Loading
--
gpm/sf
Thickened Flow
--
GPM
Concentration Ratio
--
:1
GBT typical: 40-100 lbs/hr/sf โ€ข DAF: 20-40 lbs/hr/sf โ€ข Gravity: 5-15 lbs/day/sf

๐Ÿงญ WIZARDS & DIAGNOSTICS

๐Ÿ“ Jump to Section
๐Ÿ“Š
Health
๐Ÿงญ
Wizards
๐Ÿ”ฎ
Sims
๐Ÿ“š
SOPs
โš–๏ธ
Mass Bal
๐Ÿ“Š System Health Score
Health
95
/100
โ— Process Control: Excellent
โ— Effluent Quality: Good
โ— Equipment Status: Monitor
โ— Compliance: In Limits
๐Ÿงญ Select a Troubleshooting Wizard

Choose a problem to diagnose. Each wizard will guide you through step-by-step questions to identify the root cause and recommend solutions.

๐Ÿ”ด

High Effluent TSS

TSS exceeding permit limits? Diagnose clarifier, biological, and hydraulic causes.

8 Decision Points โ†’
๐ŸŸ 

Filamentous Bulking

SVI > 150? Poor settling? Identify filament type and targeted solutions.

10 Decision Points โ†’
๐Ÿ”ต

High Effluent Ammonia

NHโ‚ƒ-N above limits? Check nitrification, DO, alkalinity, and toxicity.

9 Decision Points โ†’
๐ŸŸข

Low DO Problems

Can't maintain DO setpoint? Diagnose aeration, loading, and equipment issues.

8 Decision Points โ†’
๐ŸŸค

Foam/Scum Issues

Excessive foam on basins or clarifiers? Identify foam type and control strategies.

6 Decision Points โ†’
๐Ÿ‘ƒ

Odor Control

Hโ‚‚S or septic odors? Locate sources and implement control measures.

7 Decision Points โ†’
๐ŸŸฃ

Nutrient Removal

High phosphorus or nitrogen? Optimize Bio-P, chemical, and denitrification.

10 Decision Points โ†’
โšก

Blower/Aeration

Equipment issues, high amps, surge? Diagnose blower and air distribution problems.

9 Decision Points โ†’
๐Ÿ”ง

Clarifier Mechanical

High torque, scum issues, weir problems? Troubleshoot clarifier equipment.

8 Decision Points โ†’
๐Ÿ’ง

RAS/WAS Optimization

Sludge return issues? Optimize RAS rate, WAS control, and maintain MLSS.

8 Decision Points โ†’
๐Ÿงญ Wizard Active
Step 1 of 8 12%

Question will appear here...

๐Ÿ“ Diagnosis Path:
Start โ†’ ...
โœ… Diagnosis Complete
๐Ÿ“œ Recent Diagnoses

No diagnoses completed yet. Run a wizard to see your history here.

๐Ÿญ MULTI-PLANT

๐Ÿญ Multi-Plant Fleet Management

๐Ÿญ Fleet Operations Dashboard

Centralized monitoring and management for multiple treatment facilities

Total Plants

4

Total Capacity

18.5 MGD

Online

3

Avg Efficiency

93.1%

Total Flow

15.1 MGD

Avg Load

82%

๐Ÿ“Š Fleet Performance Comparison
North Regional WWTP ONLINE
๐Ÿ“ Houston, TX
Capacity: 5.0 MGD
Flow: 4.2 MGD
Efficiency: 94.5%
Load: 84%
South Municipal Plant ONLINE
๐Ÿ“ Pearland, TX
Capacity: 3.5 MGD
Flow: 2.8 MGD
Efficiency: 92.1%
Load: 80%
East Industrial WWTP MAINTENANCE
๐Ÿ“ Pasadena, TX
Capacity: 8.0 MGD
Flow: 6.5 MGD
Efficiency: 89.7%
Load: 81%
West Community Plant ONLINE
๐Ÿ“ Katy, TX
Capacity: 2.0 MGD
Flow: 1.6 MGD
Efficiency: 96.2%
Load: 80%
โฐ Detention Time (General)
Detention Time-minutes
Detention Time-hours
๐Ÿ‘ฅ Population Equivalent
PE (BOD basis)-people
PE (Flow basis)-people
GPD per capita-gpd/person
๐Ÿ“… Sludge Age (Simple)
Sludge Age-days
Status-
๐Ÿ“‰ Percent Removal (Universal)
Amount Removed-units
Percent Removal-%
๐Ÿ”„ Flow Unit Converter
MGD-
GPM-
GPD-
CFS-
mยณ/day-
L/s-
๐Ÿ”Š Blower Noise Estimation
Est. Sound Level-dB(A)
Status-
๐ŸŒ Carbon Footprint Estimator
Energy CO2-lb CO2/day
Chemical CO2-lb CO2/day
Biogas Offset-lb CO2/day
Net Carbon-lb CO2/day
๐Ÿ’ฐ Treatment Cost Analysis
Total Daily Cost-$/day
Cost per MG-$/MG
Cost per 1000 gal-$/1000 gal
Monthly Cost-$/month
Annual Cost-$/year
๐Ÿ“ˆ Fleet Analytics Summary
93.1%
Fleet Avg Efficiency
โ†‘ 2.3% vs last month
82%
Avg Capacity Utilization
Optimal Range
$45.2K
Monthly Operating Cost
โ†“ 5% vs budget
99.2%
Compliance Rate
All permits current
๐Ÿ’ก Tips: Click on a plant card to select it, then use Edit/Delete buttons. Use Compare to analyze multiple plants side-by-side. Export data to CSV for reporting.

๐Ÿ”€ Interactive Troubleshooting Wizard 9 PROBLEM CATEGORIES

Step-by-step diagnostic decision trees with visual path tracking

โš ๏ธ Select Problem Category
๐Ÿ“‹ Recent Troubleshooting History
No troubleshooting history yet. Complete a diagnosis to save it here.

๐Ÿ”ฎ Process Simulations 20 SCENARIOS

"What happens if..." - Predict process changes before you make them

โšก Quick Scenarios

๐Ÿ› ๏ธ Custom Simulation Builder
๐Ÿ“Š CURRENT CONDITIONS
๐Ÿ”„ PROPOSED CHANGES
๐Ÿ“œ Recent Simulations
No simulations run yet. Select a scenario above to begin.

๐Ÿ“œ Texas TCEQ Certification Prep CLASS D-C-B-A

Practice tests for Texas Wastewater Operator Certification Exams

๐ŸŒฑ ENTRY
Class D
Entry Level Operator
โ€ข Basic plant operations
โ€ข Safety fundamentals
โ€ข Simple calculations
No tests taken yet
๐Ÿ“˜ INTERMEDIATE
Class C
Intermediate Operator
โ€ข Process control basics
โ€ข Lab procedures
โ€ข Intermediate math
No tests taken yet
๐Ÿ“™ ADVANCED
Class B
Advanced Operator
โ€ข Supervisor responsibilities
โ€ข Advanced process control
โ€ข Complex calculations
No tests taken yet
๐Ÿ‘‘ EXPERT
Class A
Chief Operator
โ€ข Full plant management
โ€ข Regulatory compliance
โ€ข All calculations
No tests taken yet
๐Ÿ“š Study by Topic
๐Ÿ“œ Test History
No tests taken yet. Start a practice exam to track your progress!
๐ŸŽ“
Training & Safety Center
OSHA-compliant safety procedures + 70+ curated training videos
8
Safety Topics
70+
Videos
OSHA
Compliant
โšก Quick Navigation - Safety
๐Ÿ”’
LOTO
๐Ÿšง
Confined Space
โ˜ ๏ธ
Hโ‚‚S Awareness
๐Ÿฆบ
PPE Guide
๐Ÿšจ
Emergency
โš—๏ธ
HazCom
โšก
Electrical
โœ…
Checklists
๐Ÿ”’ Lockout/Tagout (LOTO) Procedures OSHA 29 CFR 1910.147
โš ๏ธ Purpose of LOTO
Lockout/Tagout procedures prevent the unexpected startup or release of stored energy during maintenance and servicing activities. At WWTPs, this includes pumps, blowers, mixers, clarifier drives, conveyors, and all electrical equipment.
๐Ÿ“‹ Standard LOTO Procedure - 8 Steps
1
Preparation
Identify all energy sources. Review equipment-specific LOTO procedures.
2
Notification
Notify all affected employees that equipment will be locked out.
3
Equipment Shutdown
Shut down equipment using normal operating controls.
4
Isolation
Isolate equipment from ALL energy sources.
5
Apply LOTO Devices
Apply your personal lock and tag to each energy isolation point.
6
Release Stored Energy
Bleed air/hydraulic lines, discharge capacitors, release spring tension.
7
Verification
Verify isolation by attempting to start equipment. Confirm zero energy state.
8
Perform Work
Equipment is now safe. Keep LOTO in place until ALL work is complete.
๐Ÿญ Common WWTP Equipment LOTO Points
๐Ÿ’ง Pumps
โ€ข Electrical disconnect (MCC or local)
โ€ข Suction/discharge valves
โ€ข VFD isolation if equipped
๐ŸŒ€ Blowers/Aerators
โ€ข Main electrical disconnect
โ€ข Inlet/outlet dampers
โ€ข Bleed air pressure
โš™๏ธ Mixers/Flocculators
โ€ข Motor disconnect
โ€ข VFD isolation
โ€ข Impeller blocking
๐Ÿ”„ Clarifier Drives
โ€ข Main drive motor disconnect
โ€ข Rake mechanism blocking
โ€ข Skimmer drive isolation
๐Ÿšง Confined Space Entry Procedures OSHA 29 CFR 1910.146
๐Ÿ“– What is a Confined Space?
A space that meets ALL THREE criteria: (1) Large enough to enter, (2) Limited entry/exit, (3) NOT designed for continuous occupancy.
Wet Wells Manholes Digesters Tanks Vaults Clarifiers (drained)
๐ŸŒก๏ธ Atmospheric Testing Limits
Oโ‚‚
19.5-23.5%
<19.5% Deficient
LEL
<10%
Exit at 10%
Hโ‚‚S
<10 ppm
IDLH: 100 ppm
CO
<35 ppm
IDLH: 1,200 ppm
๐Ÿ“‹ Entry Permit Requirements
โ˜ ๏ธ Hydrogen Sulfide (Hโ‚‚S) Awareness EXTREMELY HAZARDOUS
โ˜ ๏ธ โš ๏ธ โ˜ ๏ธ
Hโ‚‚S IS THE #1 KILLER IN WASTEWATER
Colorless gas - "rotten egg" odor at low levels
OLFACTORY FATIGUE above 100 ppm - you can't smell it!
๐Ÿ“Š Hโ‚‚S Exposure Levels
Level Effects Action
0.01-0.3 ppmOdor thresholdBe aware
10 ppmOSHA PEL, eye irritationExit, ventilate
50-100 ppmSevere damage, loss of smellEmergency! SCBA required
100 ppmIDLH - Can't smell it!Life-threatening
700+ ppmImmediate deathSingle breath fatal
๐Ÿญ Hโ‚‚S Sources at WWTPs
๐Ÿ•ณ๏ธ Collection
Manholes, wet wells, lift stations
๐Ÿ“ฅ Headworks
Screening, grit removal areas
๐Ÿ”„ Primary
Clarifier scum troughs, sludge wells
๐Ÿงช Sludge
Digesters, belt press, truck loading
๐Ÿฆบ Personal Protective Equipment (PPE)
๐Ÿ“‹ PPE by Task
Task ๐Ÿ‘ท ๐Ÿ‘“ ๐Ÿ‘‚ ๐Ÿ˜ท ๐Ÿงค ๐Ÿ‘ข
General Plantโœ…โœ…---โœ…
Blower Roomโœ…โœ…โœ…--โœ…
Chemical Feedโœ…Goggles-APRChemโœ…
Chlorine Roomโœ…Full-SCBAChemโœ…
Confined Spaceโœ…โœ…-SCBAโœ…โœ…
๐Ÿ‘ท
Head
Type I/II, Class E (electrical rated)
๐Ÿ‘“
Eye/Face
ANSI Z87.1, side shields
๐Ÿงค
Hands
Match glove to hazard type
๐Ÿ˜ท
Respiratory
Fit testing required
๐Ÿšจ Emergency Response
๐Ÿ“ž EMERGENCY CONTACTS
Emergency
911
Poison Control
1-800-222-1222
CHEMTREC
1-800-424-9300
๐Ÿ”ฅ
FIRE
  1. Activate fire alarm
  2. Call 911
  3. Evacuate via nearest exit
  4. Meet at assembly point
  5. Do NOT re-enter
โ˜ ๏ธ
CHEMICAL SPILL
  1. Evacuate upwind
  2. Alert others
  3. Identify chemical (SDS)
  4. Don appropriate PPE
  5. Contain if trained
๐Ÿฅ
MEDICAL
  1. Ensure scene is safe
  2. Call 911
  3. Provide first aid if trained
  4. Get AED if cardiac
  5. Stay with victim
โš ๏ธ CONFINED SPACE RESCUE
NEVER enter without SCBA and retrieval equipment! Most fatalities are would-be rescuers. Call for help, use retrieval system from outside, wait for trained rescue team.
โš—๏ธ Hazard Communication (HazCom) OSHA 29 CFR 1910.1200
๐Ÿท๏ธ GHS Hazard Pictograms
๐Ÿ’ฅ
Explosive
๐Ÿ”ฅ
Flammable
๐Ÿงช
Corrosive
โ˜ ๏ธ
Toxic
โš ๏ธ
Irritant
๐Ÿซ
Health Hazard
๐Ÿ“„ SDS - 16 Required Sections
1. Identification
9. Physical/chemical properties
2. Hazard(s) identification
10. Stability and reactivity
3. Composition/ingredients
11. Toxicological info
4. First-aid measures
12. Ecological info
5. Fire-fighting measures
13. Disposal considerations
6. Accidental release
14. Transport info
7. Handling and storage
15. Regulatory info
8. Exposure controls/PPE
16. Other information
โšก Electrical Safety NFPA 70E
โšกโš ๏ธโšก
ARC FLASH HAZARD
Up to 35,000ยฐF - Always verify de-energized state and wear appropriate PPE
๐Ÿ“‹ Electrical Safety Rules
1.Only qualified persons work on electrical
2.Assume all circuits energized until proven otherwise
3.Apply LOTO before any electrical work
4.Maintain safe approach distances
5.Wear appropriate arc-rated PPE
6.Never work alone on energized equipment
๐Ÿฆบ Arc Flash PPE Categories
Cat 1
4 cal/cmยฒ
Cat 2
8 cal/cmยฒ
Cat 3
25 cal/cmยฒ
Cat 4
40 cal/cmยฒ
โœ… Safety Checklists & Quick Cards
๐Ÿ“‹ Daily Safety Walk-Through
๐Ÿƒ Quick Reference Cards

๐Ÿญ WWTP Command Center

๐Ÿ“Š Executive
โš™๏ธ Operations (Hydraulic Flow Order)
๐Ÿ’ผ Business

๐Ÿ“š Quick Reference Library

๐Ÿงซ MLSS (Mixed Liquor Suspended Solids)

Process TypeTypical RangeOptimal
Conventional Activated Sludge1,500 - 3,500 mg/L2,000 - 3,000 mg/L
Extended Aeration3,000 - 6,000 mg/L4,000 - 5,000 mg/L
MBR Systems8,000 - 15,000 mg/L10,000 - 12,000 mg/L
SBR Systems2,000 - 5,000 mg/L3,000 - 4,000 mg/L
MBBR Systems2,000 - 4,000 mg/L2,500 - 3,500 mg/L

โฑ๏ธ SRT (Sludge Retention Time)

Treatment GoalTypical SRTNotes
BOD Removal Only3 - 5 daysMinimum for stable operation
Nitrification8 - 15 daysTemperature dependent
Extended Aeration20 - 30 daysLow sludge production
Cold Weather (<15ยฐC)15 - 25 daysSlower nitrifier growth
Warm Weather (>20ยฐC)8 - 12 daysFaster kinetics

โš–๏ธ F/M Ratio (Food to Microorganism)

Process TypeF/M RangeOptimal
Conventional0.2 - 0.50.3 - 0.4
Extended Aeration0.05 - 0.150.08 - 0.12
High Rate0.5 - 1.00.6 - 0.8
Contact Stabilization0.2 - 0.60.3 - 0.5

๐Ÿ“‰ SVI (Sludge Volume Index)

SVI RangeConditionAction
< 100 mL/gExcellent settlingOptimal operation
100 - 150 mL/gGood settlingMonitor closely
150 - 200 mL/gFair settlingInvestigate causes
> 200 mL/gBulking sludgeImmediate action needed

๐Ÿ’จ Dissolved Oxygen (DO)

Location/ProcessTarget DONotes
Aeration Basin1.5 - 2.5 mg/LMinimum 1.0 for nitrification
Anoxic Zone< 0.5 mg/LRequired for denitrification
Anaerobic Zone< 0.2 mg/LBio-P removal
Final Effluent> 4.0 mg/LPermit requirement typical

๐Ÿงช pH & Alkalinity

ParameterOptimal RangeCritical Limits
Aeration Basin pH6.8 - 7.5< 6.5 or > 8.5 inhibits nitrification
Alkalinity (as CaCOโ‚ƒ)100 - 200 mg/L< 50 mg/L causes pH crash
Alkalinity for Nitrification7.1 mg/L per mg NHโ‚ƒ-NConsumed during nitrification

๐Ÿšจ Bulking Sludge (High SVI)

Symptoms: SVI > 150, poor settling, rising sludge blanket

  • Low DO: Increase aeration, check diffusers
  • Low F/M: Reduce MLSS, increase wasting
  • Nutrient deficiency: Check N:P ratio (100:5:1 BOD:N:P)
  • Septicity: Check collection system, reduce detention time
  • Low pH: Add alkalinity (lime, soda ash)

๐Ÿซง Foaming Problems

Brown/Tan Foam (Nocardia):

  • Reduce SRT to 8-10 days
  • Increase wasting rate
  • Add chlorine to RAS (2-5 mg/L)
  • Spray water to break foam

White Foam:

  • Young sludge - reduce wasting
  • Low MLSS - reduce wasting, increase SRT
  • Surfactants - check industrial inputs

โš ๏ธ Poor Nitrification

Symptoms: High effluent ammonia, low nitrate

  • Low DO: Maintain > 2.0 mg/L in aeration
  • Low SRT: Increase to 12-15 days minimum
  • Low pH: Maintain pH > 6.8, add alkalinity
  • Cold temperature: Increase SRT in winter
  • Toxicity: Check for industrial discharge
  • Insufficient alkalinity: Need 7.1 mg/L alk per mg/L NHโ‚ƒ-N

๐Ÿ”„ Rising Sludge in Clarifier

Symptoms: Clumps of sludge floating, gas bubbles

  • Denitrification: Reduce sludge blanket depth
  • Increase RAS rate
  • Reduce SRT if over-nitrifying
  • Add anoxic zone before clarifier
  • Check for septic conditions

๐Ÿ”ฌ Pin Floc / Dispersed Growth

Symptoms: Turbid effluent, small floc particles

  • Over-aeration: Reduce DO to 2.0 mg/L
  • Toxicity: Check industrial inputs
  • Low SRT: Increase SRT, reduce wasting
  • Hydraulic washout: Check for I&I during storms
  • Add polymer to clarifier

๐Ÿงซ High Effluent Phosphorus

Symptoms: Effluent TP > permit limit

  • Chemical addition: Alum, ferric, or ferrous
  • Dose ratio: 1.5-2.5 mol Fe/mol P or 1.5-2.0 mol Al/mol P
  • Bio-P issues: Check anaerobic zone DO (< 0.2 mg/L)
  • Ensure VFAs available in anaerobic zone
  • Check for nitrate recycle to anaerobic zone

๐Ÿ“‹ TCEQ Typical Effluent Limits

ParameterDaily AvgDaily MaxUnits
BODโ‚…10 - 2025 - 40mg/L
TSS15 - 2030 - 45mg/L
Ammonia-N (Summer)2 - 54 - 10mg/L
Ammonia-N (Winter)3 - 106 - 20mg/L
Total Phosphorus0.5 - 1.01.0 - 2.0mg/L
E. coli126399CFU/100mL
DO (Minimum)4.0 - 6.0-mg/L
pH6.0 - 9.0S.U.

๐Ÿ“Š CBODโ‚… vs BODโ‚…

ParameterWhen RequiredTypical Limit
BODโ‚… (Total)Standard permits20 mg/L avg, 40 mg/L max
CBODโ‚…Nitrifying plants10 mg/L avg, 25 mg/L max
Note:CBOD โ‰ˆ 0.8-0.9 ร— BOD for nitrifying plants

๐Ÿ“… Typical Monitoring Frequency

ParameterSmall (<1 MGD)Medium (1-5 MGD)Large (>5 MGD)
FlowDailyContinuousContinuous
pH, DO, TempDailyDailyContinuous
BOD, TSSWeekly2x/weekDaily
AmmoniaWeekly2x/weekDaily
E. coliWeekly2x/weekDaily
PhosphorusMonthlyWeekly2x/week

๐Ÿงฎ Common Formulas

ParameterFormula
F/M RatioF/M = (Q ร— BOD ร— 8.34) / (V ร— MLSS ร— 8.34) = Q ร— BOD / (V ร— MLSS)
SRT (days)SRT = (V ร— MLSS) / [(Qw ร— MLSS_ras) + (Qe ร— TSS_eff)]
MLSS (mg/L)MLSS = (SRT ร— Q ร— BOD ร— Y) / [V ร— (1 + kd ร— SRT)]
OLROLR = (Q ร— BOD ร— 8.34) / (V ร— 1000) lb BOD/1000 cf/day
SVI (mL/g)SVI = (Settled Volume mL/L ร— 1000) / MLSS mg/L
WAS FlowQw = V / SRT - Qe ร— (TSS_eff / MLSS_ras)
RAS RateRAS% = MLSS / (MLSS_ras - MLSS) ร— 100
Detention TimeDT (hr) = V (gal) ร— 24 / Q (GPD)
Surface LoadingSLR = Q (GPD) / Area (sf)
Weir LoadingWLR = Q (GPD) / Weir Length (ft)

๐Ÿ“ Conversion Factors

Convert FromToMultiply By
MGDGPM694.4
MGDmยณ/day3,785
lb/daykg/day0.4536
mg/L ร— MGD ร— 8.34lb/day-
ftm0.3048
sfmยฒ0.0929
cfgal7.48
psift head2.31
HPkW0.746

๐Ÿ“Š Typical Design Constants

ParameterSymbolTypical Value
Yield CoefficientY0.4 - 0.6 lb VSS/lb BOD
Decay Coefficientkd0.05 - 0.1 dayโปยน
MLVSS/MLSS Ratio-0.70 - 0.85
BOD:N:P Ratio-100:5:1
Oโ‚‚ for Carbonaceous-1.1 - 1.5 lb Oโ‚‚/lb BOD
Oโ‚‚ for Nitrification-4.6 lb Oโ‚‚/lb NHโ‚ƒ-N
Alkalinity for Nitrif.-7.1 mg/L alk per mg/L NHโ‚ƒ-N
Quick reference SOPs for common wastewater operations. Click any card to view the full procedure.
๐Ÿš€ Plant Startup

Procedures for starting treatment processes after shutdown

๐Ÿ›‘ Emergency Shutdown

Emergency procedures for plant shutdown

๐Ÿ”„ Sludge Wasting

WAS calculation and wasting procedures

โš™๏ธ Clarifier Operations

Primary and secondary clarifier operation

โ˜ข๏ธ Disinfection

Chlorination and UV disinfection procedures

๐Ÿงช Sampling & Testing

Sample collection and lab testing procedures

โš—๏ธ Chemical Handling

Safe chemical storage and handling

๐Ÿ’จ Blower Operations

Aeration blower startup and maintenance

๐Ÿ—œ๏ธ Dewatering

Belt press and centrifuge operation

๐Ÿ“ฒ Install WWTP Command Center

Add this app to your home screen for quick access and offline use.

๐Ÿ“ฑ Android (Chrome/Samsung):
  1. Tap the โ‹ฎ menu (3 dots) in browser
  2. Select "Add to Home screen" or "Install app"
  3. Tap Add/Install to confirm
๐ŸŽ iPhone/iPad (Safari):
  1. Tap the Share button (โ–กโ†‘)
  2. Scroll down and tap "Add to Home Screen"
  3. Tap Add to confirm
๐Ÿ’ป Desktop (Chrome/Edge):
  1. Click the install icon (โŠ•) in the address bar
  2. Or click โ‹ฎ menu โ†’ Install WWTP...
  3. Click Install to confirm
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